1. Background
    Axis plan  Unternehmung Ausladung 

2. Battle
    Southern Horn  Northern Horn 

3. Aftermath
    Analysis  Casualties  Subsequent operations 

4. Citations

5. Bibliography

6. Further reading

Unternehmen Ochsenkopf (Operation Ox Head) also known as the Battle of Sidi Nsir, and the Battle of Hunts Gap was an Axis offensive operation in Tunisia from {{nowrap|26 February – 4 March}} 1943, during the Tunisia Campaign of the Second World War. The offensive and a subsidiary operation Unternehmen Ausladung, was intended to gain control of Medjez el Bab, Béja, El Aroussa, Djebel Abiod and a position known as Hunt's Gap, between the British First Army and the Axis Army Group Africa ({{lang|de|Heeresgruppe Afrika}}/{{lang|it|Gruppo d'Armate Africa}}). The offensive gained some ground but none of the more ambitious objectives was reached before the operation was called off, due to increasing losses of infantry and tanks, particularly the heavy Tigers. Unternehmen Ochsenkopf was the last big Axis offensive by the 5th Panzer Army before the final Allied offensive in April and May, which occupied Tunisia and took the surviving {{nowrap|250,000 Axis}} troops into captivity.

Background

After the Battle of Kasserine Pass {{nowrap|(19–24 February)}}, the Axis created Army Group Africa ({{lang|de|Heeresgruppe Afrika}}/{{lang|it|Gruppo d'Armate Africa}}) as a command headquarters for the 5th Panzer Army and the Italian 1st Army in Tunisia. Adolf Hitler and the German General Staff Oberkommando der Wehrmacht (OKW) believed that Generaloberst Hans-Jürgen von Arnim should assume command but Generalfeldmarschall Albert Kesselring the German Oberbefehlshaber Süd (OB Süd, Commander-in-Chief South) argued for Generalfeldmarschall Erwin Rommel, who was appointed to command the new Army Group Africa on 23 February.{{sfn|Rolf|2001|p=152}} Comando Supremo, the Italian General Staff, ordered Rommel to end the attack at Kasserine, in view of the Allied reinforcement of the Tebessa area, to conduct a spoiling offensive against the Eighth Army (General Bernard Montgomery) as it approached the defences of the Mareth Line from the east.{{sfn|Playfair|Molony|Flynn|Gleave|2004|p=305}}

The villages of Gafsa, Metlaoui and Tozeur were to be held by mobile troops and most of the attack group was to return to the 1st Italian Army. The 10th Panzer Division had retired from Thala by early on 23 February and the 21st Panzer Division ended its attack on Sbiba on 24 February. The divisions were to refit and also rejoin the 1st Italian Army, ready for an attack in early March, the moves to be covered by minor operations on the 5th Panzer Army front. On 24 February, Arnim flew to Rome without consulting Rommel and advocated an offensive towards Béja, being convinced that the British First Army (General Kenneth Anderson), had sent reinforcements south from the northern front to save Sbiba and Thala. Arnim gained the approval of Kesselring, for an attack on a wide front against the V Corps (Charles Allfrey) sector on 26 February.{{sfn|Howe|1957|pp=464–466}}{{sfn|Playfair|Molony|Flynn|Gleave|2004|p=305}}

Axis plan

Unternehmen Ochsenkopf was a plan to penetrate the British defences on 26 February, with {{lang|de|Korpsgruppe Weber}} (General Friedrich Weber) of the 334th Infantry Division, elements of the Hermann Göring Division which had recently arrived and the parts of the 10th Panzer Division not involved in Unternehmen Frühlingswind (Operation Spring Storm), in three groups or horns, in the shape of a bull's head. The northern horn, with most of the tanks, was to advance on the route from Mateur from the north-east, to capture Béja {{convert|25|mi|km|order=flip|abbr=on}} west of Medjez.{{sfn|Perrett|1993|pp=18–20}} The second group was to attack from Goubellat towards Sloughia and Oued Zarga to envelop the British at Mejez El Bab and the third group was to carry out a pincer attack in the Bou Arouda valley, then advance through El Aroussa to Gafour, with the objective of the road junction at El Aroussa. In the north, the improvised Division von Broich/von Manteuffel (Division von Manteuffel), in the subsidiary Unternehmen Ausladung (Operation Disembarkation), was to defeat the British in the Sedjenane valley, cut the communications from Jefna to Djebel Aboid and cover the northern flank of {{lang|de|Korpsgruppe Weber}}. The operations would force the allies to withdraw and delay a further advance, while Rommel prepared the attack of the 1st Italian Army (the former German-Italian Panzer Army) from the Mareth Line defences against the Eighth Army.{{sfn|Rolf|2001|p=152}}{{sfn|Playfair|Molony|Flynn|Gleave|2004|p=306}}

Unternehmung Ausladung

The subsidiary Unternehmung Ausladung began on the morning of 26 February, to outflank the British in Sedjenane and the high ground opposite Green Hill, with an attack on the hilly coastal strip to the north between the town and Cap Serrat. The area was lightly held by poorly-equipped French troops of the Corps Franc d'Afrique.{{sfn|Atkinson|2013|pp=399–400}} Division von Manteuffel led the attack with elite troops of the Luftwaffe Fallschirmjäger Regiment (motorized) "Barenthin" (Major Rudolf Witzig) and the Italian Bersaglieri Regiment 10.{{sfn|Villahermosa|2010|pp=243–245}} The Axis forces, with air support from the Luftwaffe made good progress across the hills held by the Free French between Cap Serrat, the railway and Sedjenane. The French managed to repulse an Italian attack but were then overrun and many were taken prisoner.{{sfn|Dunning|2011|pp=109–112}} On 27 February, elements of the 139th Infantry Brigade of the 46th Infantry Division and attached No 1 Commando, supported by the 70th Field and 5th Medium regiments RA, moved up to counter the German advance but lacked air support and were short of artillery ammunition, after taking part in the Battle of Kasserine.{{sfn|Atkinson|2013|pp=399–400}}{{sfn|Dunning|2011|pp=109–112}} Until 1 March, the British conducted expensive but successful counter-attacks, which delayed the Axis advance on the hamlet.{{sfn|Villahermosa|2010|pp=243–245}}

On 2 March, a Durham Light Infantry (DLI) counter-attack was a costly failure and the battalion was withdrawn to a wooded area outside Sedjenane; more German attacks on Sedjenane that day and the next were defeated.{{sfn|Villahermosa|2010|pp=243–245}} A counter-attack by a battalion of the Lincolnshire Regiment, the DLI and Churchill tanks of a North Irish Horse regiment drove the Germans back in determined fighting. The British position became untenable due to withdrawals by the French further west in the Medjez area, when Axis troops occupied high ground dominating the town. The French commander had thought his position was being outflanked and ordered a withdrawal. The German penetration towards Béja and Medjez along with the French withdrawal had caught the 139th Infantry Brigade in a salient and two companies of Sherwood Foresters were overrun.{{sfn|Dunning|2011|pp=109-112}} On 4 March, the British retreated {{convert|15|mi|km|order=flip|abbr=on}} from Sedjenane toward Djebel Abiod to stabilise the front.{{sfn|Atkinson|2013|pp=399–400}} The Axis attack on Djebel Abiod was delayed for five days by the defence of Sedjenane and it was not captured.{{sfn|Villahermosa|2010|pp=243–245}}{{sfn|Holland|2006|pp= 496–500}}

Battle

Southern Horn

The southern horn of the operation was to be conducted by {{lang|de|Kampfgruppe Audorff}} with the Herman Göring Parachute Division, the 334th Infantry Division and supporting panzer battalions.{{sfn|Stimpel|1998|p=134}} Protecting this area was a British force known as Y Division, an ad hoc force, which had been formed from the 139th (Irish) Brigade, a mixture of Commandos, Grenadier and Coldstream Guards, elements of the 1st Parachute Brigade and Churchill tanks of C Squadron 142 (Suffolk) Regiment under command.{{sfn|Perrett|1993|pp=18–20}} The {{lang|de|kampfgruppe}} attacked on the evening of 25 February, their first objectives being Tally Ho corner, an important road junction and a knoll nicknamed Fort MacGregor.{{sfn|Ford|1999|pp=46-49}} The Luftwaffe had attacked the British positions and shot up transport behind the front. At Fort MacGregor, D Company of the East Surreys were attacked by the paratroopers of the Herman Göring Division.{{sfn|Evans|2012|pp=112–115}} After two German attacks were repulsed, paratroopers blew holes in the barbed wire and the defenders were soon overwhelmed and destroyed.{{sfn|Ford|1999|pp=46–49}} Djebel Djaffa further west, held by a battalion of French Colonial troops was attacked simultaneously by the paratroopers. The French were surprised and swiftly overrun, most being captured.{{sfn|Evans|2012|pp=112–115}}

A hasty counter-attack by the Surreys on Fort MacGregor was attempted but the attack was stopped just forward of the start line and the Surreys withdrew with many casualties. British artillery bombarded the hill for several hours with all the medium and heavy guns and when the Surreys attacked again, it was empty save for six shell-shocked Germans.{{sfn|Evans|2012|pp=112–115}} The paratroopers had been devastated by the shelling and had no choice but to withdraw.{{sfn|Ford|1999|pp=46–49}} The summit was no bigger than a football pitch and was strewn with human remains, mostly German but also the British dead of D Company.{{sfn|Evans|2012|pp=112–115}} Allfrey sent forward the Lancashire fusiliers, {{nowrap|600 men}} of No. 6 Commando, the 56th Reconnaissance Regiment, Valentine tanks of the 17th/21st Lancers and elements of the 51st Royal Tank Regiment (51st RTR) and the North Irish Horse.{{sfn|Atkinson|2013|pp=399–400}}{{sfn|Ford|1999|pp=46–49}}{{sfn|Doherty|1994|pp=43–45}} The next day almost as soon as they arrived, the Surreys and the Valentines of the 17/21st Lancers, counter-attacked Djebel Djaffa, which was recaptured after some resistance.{{sfn|Evans|2012|pp=112–115}}

The 334th Division struck at Tally Ho corner just before midnight, surprised and overran the Commando garrison, whose survivors were rescued by Churchill tanks.{{sfn|Doherty|1994|pp=43–45}} The Germans pressed on to a small ridge {{convert|6|mi|km}} to the east of El Aroussa, where two battalions of the Herman Göring Division and a supporting Panzer company, assaulted a position defended by the Churchill tanks of Suffolk Squadron, 142nd Regiment RAC. Firing from hull down positions, the Churchill tanks knocked out four Panzer IV, disabled three Panzer III and destroyed an 88 mm gun for the loss of a Churchill. The German infantry had many casualties and the survivors withdrew after determined resistance by the British infantry supported by massed artillery.{{sfn|Perrett|1993|pp=18–20}} The British received reinforcements and counter-attacked after another bombardment, pushing the Germans back from Tally Ho corner into the hills east of the Medjez-El-Bab to El-Aroussa road during the night.{{sfn|Flood|2013|p=547}}{{sfn|Doherty|1994|pp=43–45}}

After dark, the British advanced and mopped up halfway along the road to Steamroller Farm, held by about {{nowrap|2,000 men}} from two battalions of the Hermann Göring Division, elements of a Panzer Grenadier regiment, 50 mm PAK 38 and {{nowrap|88 mm}} anti-tank guns.{{sfn|Flood|2013|p=547}} A Squadron of the 51st RTR in Churchill MK III tanks and a company of Coldstream Guards, set off just before midday on 28 February and by {{nowrap|4:00 p.m.}} they were in sight of the farm.{{sfn|Crow|1971|p=85}} German artillery fire was directed at them and shortly afterwards they were attacked by Junkers Ju 87 (Stuka) dive bombers, losing five Churchills.{{sfn|Rolf|2001|p=155}} The 1st Troop pressed forward into the farm area with the Coldstream but were pinned down.{{sfn|Paget|2000|p=318}} Another Churchill tank commanded by Second Lieutenant J. C. Renton arrived and two tanks made a {{convert|1500|yd|m}} dash across an exposed causeway covered by an {{nowrap|88 mm gun.}} At {{convert|20|yd|m}} the gun fired and grazed the turret, before the crew fled and the Churchill flattened the gun; the Churchills then reached the summit of the pass and surprised the Germans.{{sfn|Rolf|2001|p=155}}

The tanks came across German transport and shot them up as they went by, knocked out two Panzer III and two anti-tank guns as they tried to deploy.{{sfn|Crow|1971|p=85}} The Germans fled and as dusk fell the column was destroyed.{{sfn|Perrett|1993|pp=18–20}} Hollands and Renton were ordered to rejoin their squadron but the leading tank stalled and had to be given a tow start. The tank sortie destroyed {{nowrap|two 88 mm,}} {{nowrap|two 75 mm}} and {{nowrap|two 50 mm,}} anti-tank guns, four smaller anti-tank guns, {{nowrap|25 wheeled}} vehicles, {{nowrap|two 3-inch}} mortars, the two Panzer III and inflicted nearly {{nowrap|200 casualties.}}{{sfn|Rolf|2001|p=155}} The next day the French owner of the farm arrived at El Aroussa, to say that the Germans had gone and the British occupied the area.{{sfn|Crow|1971|p=85}} The depleted Herman Göring Regiment had suffered many more casualties; the German commander had assumed that the tank sortie was from a much bigger formation and sent a message to Fliegerführer Afrika that he had been attacked by a "mad tank battalion which had scaled impossible heights" and "compelled his ultimate withdrawal".{{sfn|Rolf|2001|p=155}}

Northern Horn

During the night Verey light signals began to go up in the hills around Sidi Nsir, and at {{nowrap|6:30 a.m.}} next morning, German mortar fire began on the British guns.{{sfn|Perrett|2012|pp=134–136}} After {{nowrap|45 minutes,}} German tanks drove down the road from Mateur and four of the 25-pounders opened fire. No. 1 gun had been specially placed at the top of a slope to cover the approach from Mateur and fired over open sights.{{sfn|Perrett|2012|p=134}} The leading German tanks ran onto mines, were damaged and withdrew with the infantry.{{sfn|Rolf|2001|p=152}} At {{nowrap|11:00 a.m.}} the Germans made another attempt on the left flank but F Troop opened fire and hit four German tanks, setting them ablaze.{{sfn|Perrett|2012|p=134}} German infantry engaged B Company with small-arms fire but were repulsed. Around midday, the Germans prepared to attack again but massed British artillery-fire broke up the attack before it began.{{sfn|Lewin|2012|p=177}}

By {{nowrap|1:00 p.m.,}} thirty German tanks, self-propelled guns and infantry in support, had worked round both flanks and were within {{convert|600|yd|m}}. The highest observation post was attacked, its wireless transmitter destroyed and telephone lines cut. Eight Messerschmitt Bf 109s fighters strafed each gun in turn all day, inflicting casualties and also attacked rear areas.{{sfn|Lewin|2012|p=177}} Several of the British vehicles on the road to Hunt's Gap were hit and ammunition had to be salvaged at risk by the gunners. Bivouacs and dumps were also hit and left burning.{{sfn|Perrett|2012|p=134}}

Just after {{nowrap|2:30 p.m.,}} German lorried infantry turned the southern flank by infiltrating forward under cover of a hill.{{sfn|Perrett|2012|p=134}} At {{nowrap|3:00 p.m.,}} German infantry commenced small-arms fire at close range and a column of tanks led by a Tiger moved along the road into the battery position, as thirteen more tanks gave covering fire from hull down positions.{{sfn|Perrett|2012|p=134}} The British gunners switched to armour piercing shot and knocked out three tanks which blocked the road.{{sfn|Perrett|2012|p=134}}

At {{nowrap|5:30 a.m.}} another German attack on the remaining guns began; seven tanks were hit but, one by one, the remaining British guns were hit by tank gun and machine-gun fire.{{sfn|Rolf|2001|p=152}} By nightfall, only one 25-pounder and several Bren guns remained, engaging the German tanks at ranges of from {{convert|10|–|20|yd|m}}.{{sfn|Lewin|2012|p=177}} "Tanks are on us" was the last wireless message and Newham ordered the evacuation of battalion headquarters.{{sfn|Perrett|2012|p=137–139}} When the battle began there had been nine officers and {{nowrap|121 other}} ranks; nine men reached British lines, seven of whom were wounded.{{sfn|Lewin|2012|p=177}}

The defence of Sidi Nsir gained time to prepare defences at Hunt’s Gap, a defile about {{convert|15|mi|km|order=flip|abbr=on}} northeast of Béja. The 128th Brigade had support from {{nowrap|72 × 25-pounders,}} {{nowrap|15 × 5.5-inch}} medium guns and two squadrons of Churchill MK IIIs of the North Irish Horse.{{sfn|Bidwell|Graham|2004|pp=258–259}} A tank killing zone had been prepared with minefields, anti tank guns, hull down Churchill tanks and direct fire areas for medium and heavy artillery. A cab rank of Hurricane MKII D fighter-bombers, equipped with {{nowrap|40 mm Vickers S}} guns, circled overhead in communication with the ground, waiting for targets.{{sfn|Rolf|2001|p=154}}

On 28 February, Rommel ordered Oberst Rudolf Lang to hurry up and he ordered a pre-dawn attack by about ten Panzer IV and lorried infantry, after an artillery bombardment against the positions of B Company, 2/4th Battalion.{{sfn|Mitcham|2010|pp=76–78}} Churchill tanks knocked out four Panzer IV, which halted the attack.{{sfn|Syron|2013|p=113}} The Germans then attacked again and penetrated C Company but the tanks of the North Irish Horse stopped the Germans until dusk. B Company was ordered to withdraw, after a platoon was overrun and a second was in danger of collapse.{{sfn|Rolf|2001|p=154}} C Company was overrun by German infantry and armour later in the day but the attackers were unable to advance further.{{sfn|Holland|2006|pp=496–500}}

The next day Lang found he was only {{convert|10|mi|km}} from Hunt's Gap but was down to six operational tanks.{{sfn|Schneider|2004|pp=96–97}} The 2/5th Leicesters arrived and a thick fog fell across the valley, which hampered RAF sorties; the Germans attacked again and in the fog, D Company was surprised and a platoon was overrun but the rest of the attack was defeated by artillery-fire and the 1/4th Battalion infantry. The fog lifted and immediately the RAF made eight sorties down into the valley and caught German supply columns, as artillery concentrations were directed by the FOOs and Air Observation Post observers.{{sfn|Holland|2006|pp=496–500}}{{sfn|Lewin|2012|p=180}}

The German tanks and infantry suffered many casualties; the serpentine road along which the Axis transport was concentrated, was turned into a wilderness of bomb craters and burning vehicles, which forced a withdrawal.{{sfn|Lewin|2012|p=180}}{{sfn|Hart|2001|p=135}} The 2/4th Battalion held on to their last positions as the Germans tried to advance along a wadi to the south. The British surprised them with a counter-attack in which forty Germans were killed and sixty captured.{{sfn|Rolf|2001|p=154}} Further along the road towards Sidi Nsir, artillery broke up another German attack. A British tank officer went forward to investigate, saw no sign of Germans, reached the tanks and found the turrets open and the crews gone.{{sfn|Marshal|1943|pp=88–90}}

On 2 March, the Germans withdrew, having lost over forty tanks and nearly sixty other armoured vehicles; two out of the four German infantry battalions were taken prisoner, in addition to the killed and wounded.{{sfn|Rolf|2001|p=154}}{{sfn|Lewin|2012|p=180}} Many of the prisoners were from the Russian front and claimed that they had never experienced such weight of bombardment.{{sfn|Marshal|1943|pp=88–90}} The offensive had failed to achieve the main objectives and Arnim called off further attacks.{{sfn|Bidwell|Graham|2004|pp=258–259}} Anderson had considered abandoning Medjez, until the success of the defence of Hunt's Gap, the no retreat order issued by General Harold Alexander, commander of the 18th Army Group and the end of the German attack, which saved the village. By 5 March, the 2/4th Battalion had lost {{nowrap|243 men}} killed or missing and were relieved by the 8th Battalion, Argyll and Sutherland Highlanders, of the 36th Infantry Brigade, 78th Division.{{sfn|Rolf| 2001|p=154}}

Aftermath

Analysis

Weber ordered Lang to fall back to defensive positions and Rommel was dismayed when he heard that {{nowrap|19 Tigers}} had been destroyed.{{sfn|Watson|2007|p=114}}{{sfn|Perrett|1993|p=139}} Major Hans-Georg Lueder, commander of {{lang|de|Schwere Panzer Abteilung}} 501 (Heavy Tank Battalion 501) was severely wounded and the detachment lost so many tanks that it ceased to be an effective fighting force.{{sfn|Schneider|2004|p=44}}{{sfn|Williamson|Bujeiro|2005|p=28}}{{sfn|NIH|2015|nopp=y}} None of the Axis operational objectives were met, despite gaining some ground in the west and the battle cost the Germans the initiative; at best they had only slightly delayed an Allied offensive.{{sfn|Atkinson|2013|pp=407–408}} The divisions needed for the attack of the 1st Italian Army on the Eighth Army were delayed for a week by the failure of Unternehmen Ochsenkopf and the Battle of Medenine was a costly failure.{{sfn|Mitcham|2010|pp=117–118}}{{sfn|Watson|2007|p= 119}} Allfrey was promoted to Major-General on 9 March.{{sfn|Anderson|1946|p=1,351}} An Axis success would have meant the loss of Béja and the retirement of the Allied line along the northern sector, including a withdrawal from Medjez el Bab, which would have prolonged the campaign and interfered with Allied plans for the Allied invasion of Sicily.{{sfn|Perrett|1993|p=139}}

Casualties

The Germans lost {{nowrap|71 panzers,}} nearly {{nowrap|90 percent}} of the tanks used and sixty other vehicles were destroyed or captured.{{sfn|Atkinson|2013|p=408}} The Tigers gained a poor reputation among their crews, who thought that they bogged too easily in wet weather, due to their weight. The Germans lost nearly {{nowrap|2,800 casualties}} and another {{nowrap|2,200 men,}} who could not be easily replaced, were captured.{{sfn|Atkinson|2013|pp=407–408}} The British suffered {{nowrap|1,800 casualties}} and lost {{nowrap|2,300 prisoners,}} {{nowrap|16 tanks,}} {{nowrap|17 guns,}} {{nowrap|13 anti-tank}} guns and forty other vehicles.{{sfn|Coggins|1980|p=134}}

Subsequent operations

On 28 March, the 46th Infantry Division attacked with the 138th Infantry Brigade, keeping the 128th Infantry Brigade in reserve and the attached 36th Infantry Brigade, 1st Parachute Brigade and French units (including a tabor of specialist mountain Goumiers). The division was supported by the field artillery of two divisions, medium and heavy guns. In four days, the 46th Infantry Division recaptured the ground lost to {{lang|de|Division von Manteuffel}} and took {{nowrap|850 German}} and Italian prisoners.{{sfn|Anderson|1946|p=11}} Sedjenane was re-captured by the Allies on 1 April.{{sfn|Ferguson|1984|p=10}}

On 7 April, Anderson ordered the 78th Infantry Division to clear the Béja–Medjez road. With artillery and close air support, the division methodically advanced {{convert|10|mi|km|order=flip|abbr=on}} through difficult mountain terrain for ten days on a {{convert|10|mi|km|order=flip|abbr=on}} front. The 4th Infantry Division moved up on the left of the 78th Infantry Division and pushed towards Sidi Nisr.{{sfn|Anderson|1946|p=11}} With the salient at Medjez relieved and lateral roads in the V Corps area cleared, Anderson began to prepare the big attack scheduled for 22 April to take Tunis. Within three weeks the Axis front collapsed and the {{nowrap|230,000 remaining}} troops in Tunisia surrendered.{{sfn|Perrett|1993|p=139}}{{sfn|Anderson|1946|p=11}}

Citations

Bibliography

• {{cite book|ref={{harvid|Atkinson|2013}}

• {{cite book |ref={{harvid|Bidwell|Graham|2004}}

• {{cite book |ref={{harvid|Coggins|1980}}

• {{cite book |ref={{harvid|Crow|1971}}

• {{cite book |ref={{harvid|Doherty|1994}}

• {{cite book |ref={{harvid|Dunning|2011}}

• {{cite book |ref={{harvid|Evans|2012}}

• {{cite book |ref={{harvid|Ferguson|1984}}

• {{cite book |ref={{harvid|Flood|2013}}

• {{cite book |ref={{harvid|Ford|1999}}

• {{cite book |ref={{harvid|Hart|2001}}

• {{cite book |ref={{harvid|Holland|2006}}

• {{cite book |ref={{harvid|Howe|1957}}

• {{cite book |ref={{harvid|Lewin|2012}}

• {{cite book |ref={{harvid|Marshal|1943}}

• {{cite book |ref={{harvid|Mitcham|2010}}

• {{cite book |ref={{harvid|Paget|2000}}

• {{cite book |ref={{harvid|Perrett|1993}}

• {{cite book |ref={{harvid|Perrett|2012}}

• {{cite book |ref={{harvid|Playfair|Molony|Flynn|Gleave|2004}}

• {{cite book |ref={{harvid|Rolf|2001}}

• {{cite book |ref={{harvid|Schneider|2004}}

• {{cite book |ref={{harvid|Stimpel|1998}}

• {{cite book |ref={{harvid|Syron|2013}}

• {{cite book |ref={{harvid|Villahermosa|2010}}

• {{cite book |ref={{harvid|Watson|2007}}

• {{cite book |ref={{harvid|Williamson|Bujeiro|2005}}

• {{cite journal |ref={{harvid|Anderson|1946}}

• {{cite web |ref={{harvid|NIH|2015}}

Further reading

• {{cite book |last1=Chant |first1=Christopher |title=The Encyclopedia of Codenames of World War II |year=2013 |publisher=Routledge |location=London |isbn=978-1-13464-787-3}}
• {{cite book |last=Fraser |first=David |title=And We Shall Shock Them: The British Army in the Second World War |publisher=A & C Black |location=London |year=2011 |isbn=978-1-44820-482-3}}
• {{cite book |last=Jaques |first=Tony |title=Dictionary of Battles and Sieges: A Guide to 8,500 Battles from Antiquity Through the Twenty-first Century |year=2006 |publisher=Greenwood Press |location=Santa Barbara, CA |isbn=978-0-31333-536-5}}
• {{cite book |last=Macksey |first=Kenneth |authorlink=Kenneth Macksey |title=Crucible of Power: the Fight for Tunisia, 1942–1943 |year=1969 |publisher=Hutchinson |location=London |isbn=0-09098-880-9}}
• {{cite book |last=Mallett |first=D. R. |title=Hitler's Generals in America: Nazi POWs and Allied Military Intelligence |year=2013 |publisher=University Press of Kentucky |location=Lexington, KY |isbn=978-0-81314-253-1}}

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