Attached is a screen shot from IWM film TOBRUK. Film is dated 17/7/1941. Image is for reference / research only. I am only assuming 7 Royal Tank Regiment by the name only as there is nothing in the text to confirm. If anyone can add or confirm anything please do. Cheers Kevin
If the footage is really from Tobruk (looks like it) then it is 'D' Squadron, as no other Matildas were in the fortress on that date. All the best Andreas