US Army Ordnance Museum at Aberdeen Proving Ground
M36 "Jackson" Tank destroyer fitted with 90mm gun in an effort to combat the heavy German tanks
M48, the main battle tank of the US at the time of the Vietnam war.
M4A1 Calliope. Sherman fitted with rocket tubes.
Looks like we have here a M53.
I think this is an M55 without the huge muzzle brake that the Minitanks model has!.
Sherman Firefly - This looks like it is a IC. Notice the vision blocks making this an early Sherman that was converted and probably delivered to Aberdeen for evaluation. There is a Panzer IV alongside.
M16 multiple gun carriage missing its guns.
First World War Mark V female tank with a Whippet behind.
Panthers. Ausf A on the left, Ausf G on the right.
Pz Kpfw I Ausf B. I believe that's a Russian T26 behind it. Maybe a T26B.
SP guns. Foreground: 15cm sFH13/1 (Sf) auf Geschützwagen Lorraine Schlepper (f) (Sd Kfz 135/1). Background: "Grille" SdKfz 138/1. 15cm gun on Pz38t chassis. Two examples of self-propelled gun mounted on captured chassis.