Troops of British King's Shropshire Light Infantry regiment resting next to a Sherman tank of British 3rd Royal Tank Regiment, France, 15 Aug 1944
Troops of British King's Shropshire Light Infantry regiment resting next to a Sherman tank of British 3rd Royal Tank Regiment, France, 15 Aug 1944
Personnel of Headquarters Squadron, British Columbia Regiment, with their Sherman tank, Brasschaet, Belgium, 14 October 1944. Photographer: Dean, Michael M. LAC 3211514 It's not a Sherman tank but an M5A1 Stuart.
A Sherman tank of 40th Royal Tank Regiment reversing into a landing ship at Bizerta, September 1943.
Two U.S. soldiers of C Company, 36th Armored Infantry Regiment, 3rd Armored Division seek shelter behind a M4 Sherman tank at Geich, near Düren, Germany, on 11 December 1944.
Men of British 4th Royal Tank Regiment and Matilda I tanks aboard a train traveling between Cherbourg and Amiens, France, 28 Sep 1939
A Churchill tank of 7th Royal Tank Regiment, 31st Tank Brigade, with jeeps and carriers during Operation 'Epsom', 26 June 1944.
Royal Tank Regiment Matilda tanks operate with infantry of 2nd Battalion North Staffordshire Regiment exercise near Hebuterne, 11 January 1940
Front view of a Churchill tank (Saurian) of A Squadron, 43rd Battalion, Royal Tank Regiment, 33rd Brigade.
Lieutenant Fathergill of B Squadron, 107th Regiment Royal Armoured Corps, UK 34th Tank Brigade cleaning a BESA machine gun with two other members of his Churchill tank crew, France, 17 Jul 1944
Churchill tank of 144th Regiment, Royal Armoured Corps (33rd Army Tank Brigade, 3rd (Mixed) Division), being hauled onto a tank transporter at Burleigh in Hampshire, August 1942.
A Churchill tank, 'Talisman' of 3rd Troop, 'A' Squadron, 48th Battalion Royal Tank Regiment, leaves a tank landing craft (TLC 316) during a combined operations exercise at Thorness Bay on the Isle of Wight.
A Churchill tank, 'Talisman' of 3rd Troop, 'A' Squadron, 48th Battalion Royal Tank Regiment, leaves a tank landing craft (TLC 316) during a combined operations exercise at Thorness Bay on the Isle of Wight
Finally, the number would identify the regiment according to a chart/list of numbers for infantry divisions, armoured divisions, etc. For instance, in 1944-45, "46" was used for the anti-tank regiment in a division.
Empty 75mm HE shell cases being collected from Royal Tank Regiment Sherman tanks, in use in the indirect artillery role in the Anzio bridgehead, 5 May 1944.
British Royal Tank Regiment tanker sharing a cup of morning tea with a member of the Danish Militærpoliti.
Thank you to Kamrade1 and TheIronArmenian
for getting me references for the Challenger 2.
Two crew members of 'Cairngorm', a Sherman tank of the 116th Regiment, Royal Armoured Corps, work on one of the tank's .30-inch Browning machine guns, between Taungtha and Meiktila, 15 March 1945.
Matilda I tank of the Royal Tank Regiment, 1st Armoured Division, being transported aboard a flatbed railway wagon, 22 July 1940