France and England Crocker was not to remain there long, however, as on 21 April 1940 he was promoted to the acting rank of brigadier and was appointed to command of the
3rd Armoured Brigade in place of
Vyvyan Pope. The brigade formed part of Major-General
Roger Evans's 1st Armoured Division (formerly the Mobile Division), then serving in England but preparing to move to France. Crocker's brigade was depleted as the
British Expeditionary Force (BEF) was expelled from the continent during the
Battle of France in May–June 1940. Landed at
Cherbourg as the rest of the BEF
retreated to Dunkirk in late May, the division unsuccessfully attacked the German
bridgeheads over the
River Somme before returning to Cherbourg where the remnants (including the brigade's last 13 tanks) were evacuated. Crocker and his brigade were evacuated in mid-June, Crocker himself returning with
Lieutenant-General James Marshall-Cornwall on the last ship. Back in Britain, where he was to remain for almost three years before seeing action again, Crocker initially remained in command of the brigade, which had suffered especially heavy tank losses in France, and was then serving in
South East England awaiting a
German invasion and training to repel it. However, on 18 September 1940, he was promoted to the acting rank of Major-General at the relatively young age of just forty-four, and became
General Officer Commanding (GOC) of the newly created
6th Armoured Division. Nine days later Crocker was made a
Commander of the Order of the British Empire (CBE) for his services in France. Crocker's new division, initially composed of the
20th and
26th Armoured Brigades, along with the
6th Support Group and other supporting units, was formed in Southern Command and, under its perfectionist GOC, trained intensively, with Crocker ensuring that all ranks knew their jobs before moving on to large-scale
exercises. The division was moved from Southern Command, where it trained throughout the winter of 1940, to
Eastern Command in late February 1941. Crocker continued training his division for the next several months. However, in mid-October 1941 Crocker, who had by now commanded his division for just over a year, relinquished command of the division to Major-General
Herbert Lumsden upon being selected to command the
2nd Armoured Group in Home Forces. The Armoured Groups were the brainchild of Major-General
Giffard Martel, the Commander Royal Armoured Corps (CRAC), and were set up following his advice with the intention of commanding all the armoured formations in the United Kingdom. His rank of major-general was made temporary on 22 October 1941. and was given command of
XI Corps, taking over from Lieutenant-General
Noel Irwin, who was being posted to command
IV Corps in the
Mediterranean theatre. Aged just forty-six, this made Crocker one of the youngest corps commanders in the British Army. It is quite probable that Alan Brooke, who still thought highly of Crocker and was now
Chief of the Imperial General Staff (CIGS), secured for him his new appointment. Crocker's new command, which had
Harold Morgan's
45th,
Evelyn Barker's
54th (East Anglian) and
Eric Miles's
56th (London) Infantry Divisions, along with the
21st Army Tank Brigade, under command, was based in
East Anglia, where it had responsibility for its defence in the event of an invasion, and was serving under Eastern Command.
North Africa Again, Crocker's appointment was not destined to last long as, in September, he relinquished command of XI Corps over to Lieutenant-General
Gerard Bucknall, and took command of
IX Corps District from Lieutenant-General
Francis Nosworthy. The corps, with
Gordon MacMillan (later a distinguished divisional commander and full general) as its Brigadier General Staff (BGS), was then stationed in
Northern England under
Northern Command, with responsibility for
Durham,
Northumberland, and the
North Riding of Yorkshire. Crocker's rank of major-general was made permanent on 4 December 1942 (with seniority backdated to 16 November 1941). On 16 March 1943 his rank of lieutenant-general was made temporary. In September IX Corps District was mobilised to become a field force formation, was redesignated as IX Corps once again, and was assigned to the newly created
British First Army. Commanded throughout its existence by Lieutenant-General
Kenneth Anderson, the First Army was formed to be the parent formation for the
Allied forces preparing to invade
French North Africa as part of
Operation Torch. Lieutenant-General
Charles Allfrey's
V Corps formed the other half of the British contingent of the First Army and saw bitter fighting in the early stages of the
Tunisian campaign towards the end of 1942 and in early 1943. Together with his corps HQ, Crocker departed for North Africa in the spring of 1943, with his HQ becoming operational on 24 March 1943. He took under command his old 6th Armoured Division, now under Major-General
Charles Keightley, along with the
46th Infantry Division, under Major-General
Harold Freeman-Attwood, and Major-General
Raymond Briggs's 1st Armoured Division, which had been transferred over from the
British Eighth Army. Crocker's first battle on 8 April was an attempt to cut off the retreating
Italian First Army, and he ordered Keightley's 6th Armoured Division to take the Fondouk Pass but he majorly underestimated the strength of the Italian defences there. Also under command for the operation was the
U.S. 34th Infantry Division, under
Major General Charles W. Ryder, which Crocker ordered to seize a key position to the right of the pass. Elements of
Philip Roberts's 26th Armoured Brigade, part of the 6th Armoured Division, cut across the Americans' line of attack and caused a considerable amount of confusion. In addition, Crocker's handling of his infantry was also thought to be somewhat poor. Although the British armour did eventually break through, the Italians had by now escaped the trap. Crocker was later very critical of the Americans, which caused upset at
Allied Forces Headquarters (AFHQ) and infuriating
General Dwight D. Eisenhower, the
Supreme Allied Commander in North Africa. The campaign continued on, with the Allies slowly tightening the noose over the
Axis forces, who were still fighting harder than ever. Crocker's IX Corps was involved in heavy fighting during the latter stages of the fighting, and managed to capture two key features, Selchet el Kourizia and Two Tree Hill, on 24 April, but despite this, IX Corps still failed to break through into the
Tunis Plain. On 27 April, Crocker was wounded in a training accident, during a demonstration of a
PIAT (Projector, Infantry, Anti Tank) anti-tank weapon, shortly before the final battle for Tunis and saw no further action in North Africa. A piece of
shrapnel had entered Crocker's upper chest. Command of IX Corps passed temporarily to Lieutenant-General
Brian Horrocks, who transferred over from the British Eighth Army's
X Corps. The war in North Africa came to an end soon afterwards, with the surrender of almost 250,000 Germans and Italians. Crocker was, nonetheless, appointed a
Companion of the Order of the Bath on 5 August 1943 for his command in Tunisia, and General
Sir Harold Alexander, commander of the Allied
18th Army Group (which controlled both the British First and Eighth Armies), believed Crocker to have performed well throughout his relatively brief time in action.
North-western Europe , Captain John Cross, and Lance Corporal Marsden, his driver. Crocker returned to England in May after his IX Corps HQ was disbanded and he remained temporarily unemployed. On his return to service in August he was, upon the recommendation of Alexander to Brooke, given command of
I Corps in early August. Crocker took over from Lieutenant-General Gerard Bucknall, who had requested demotion to temporary major-general to command a division overseas. I Corps was to form part of the
British Second Army, then under his former army commander in North Africa, Lieutenant-General Sir Kenneth Anderson (but replaced in January 1944 by Lieutenant-General
Miles Dempsey), training for
Operation Overlord, the
Allied invasion of Northern France. Crocker was to aided throughout by his BGS,
Philip Balfour. Despite Crocker's background in
armoured warfare, I Corps was predominantly an infantry formation. General Sir
Bernard Montgomery, the Allied Land Forces Commander for D Day and the battle of Normandy
21st Army Group, had confidence in Crocker's organisational skills and assigned I Corps the difficult task of capturing the city of
Caen. For the landings I Corps had under command the
3rd Canadian Division, supported by the
2nd Canadian Armoured Brigade, and
British 3rd Division (Major-General
Tom Rennie) supported by the
27th Armoured Brigade, and the
6th Airborne Division (Major-General
Richard Gale). On
D-Day, 6 June 1944, Crocker had a larger task than any other Allied corps commander: he had to control two landing beaches (
Juno and
Sword) and an
airborne assault. The fact that, in spite of inevitable mishaps, the landings went so well was a testimony to Crocker's planning. Caen did not fall on D-Day as planned, although a battalion of the British 3rd Division made a spirited attempt before being driven back by the
21st Panzer Division. I Corps took part in the bloody two-month
Battle for Caen, including
Operation Charnwood, which still had the 3rd Canadian and 3rd British Divisions under command (the latter now under Major-General
Lashmer Whistler after Rennie was injured), along with the
59th (Staffordshire) Infantry Division (Major-General
Lewis Lyne). The operation began on 7 July and, after heavy fighting, had captured most of the Caen city centre, although the Germans still held the southern half. Colonel Hermann-Eberhard Wildermuth, in charge of German operations, urged a civilian evacuation, yet only 10,000 left, as Crocker refused the proposal. The devastation that ensued was not on Wldermuth's troops but mostly on the civilian population after German troops were already on the periphery. The corps, losing the 3rd Division soon after and gaining the
49th Division (Major-General Evelyn Barker) in exchange, came under command of the
First Canadian Army (Lieutenant-General
Harry Crerar) in August 1944, I Corps drove forward to the
River Seine and then took part in the
Clearing the Channel Coast. The relationship between Crocker and Crerar was not always cordial, with the latter, shortly after taking Crocker's I Corps under command of the First Army, attempted to sack Crocker and replace him with either Lieutenant-Generals
Neil Ritchie (GOC
XII Corps) or Gerard Bucknall (GOC
XXX Corps). However, Crerar was overruled by Montgomery, the 21st Army Group commander, although the relationship improved thereafter. at the headquarters of the 21st Army Group on 15 October 1944. Montgomery is seen standing in the foreground. When severe British manpower shortages prompted the disbandment of two infantry divisions (the 59th (Staffordshire) and
50th (Northumbrian) Infantry Division) in late 1944, I Corps HQ was withdrawn from the front line to take over the administration of the 21st Army Group's rear areas in Germany as it advanced across the river Rhine (
Operation Plunder) in March 1945. Crocker was knighted as a
Knight Commander of the Order of the British Empire (KBE) in October 1944 for his performance in the Normandy invasion and its aftermath. In June 1945, with the
war in Europe over, Crocker returned to the United Kingdom to take over
Southern Command from Lieutenant-General
Sidney Kirkman, who took over I Corps from Crocker. For his services in Northwest Europe he was twice mentioned in despatches, on 9 August 1945 and again on 8 November. Crocker's son, Wilfrid, a cavalry officer serving with the
5th Royal Inniskilling Dragoon Guards, then equipped with
Cromwell tanks and part of the
7th Armoured Division, was killed in action on 20 October 1944 fighting in the battle for
's-Hertogenbosch in the Netherlands. ==Later life==