Today in WW II: 12 Jul 1943 Tank battle at Prokhorovka, during the Battle of Kursk, greatest tank battle of WW II, unsurpassed until Operation Desert Storm in 1992.   

Chart of Military Vehicle Ammunition Trailers

2d Infantry Division M5 high-speed artillery tractor towing an M10 ammunition trailer, near Les Moulins, Omaha Beach West Exit D-3, Normandy, France, 7 June 1944
2d Infantry Division M5 high-speed artillery tractor towing an M10 ammunition trailer, near Les Moulins, Omaha Beach West Exit D-3, Normandy, France, 7 June 1944.

Military vehicle trailers for ammunition...

Vehicle Description Photo Link
M-10 M-10 Trailer, Ammunition, 2-wheel (G-660)  
M-21 M-21 Trailer, Ammunition, 4-ton, 2-wheel (G-213)  
M-23 M-23 Trailer, Ammunition, 8-Ton, 4-wheel (G-216)  
M-332 M-332 Trailer, 1 1/2 ton, Ammunition M-332 Trailer, 1 1/2 ton, Ammunition
M-989 M-989 Heavy Expanded Mobility Ammunition Trailer (HEMAT) 11-Ton