This is a though one...
But I'd say that for handguns I'll choose:
- Garand
- P-38
- MG-42
- The Soviet sub-machine gun... what's its name?
Artillery:
- German 88mm AA and AT gun.
- American 105mm Howitzer
- Soviet 76mm AT and field gun
Armour:
- T-34, both versions
- Tiger I
- Sherman 'Firefly'
Planes:
- Mustang
- Stormovik
- Spitfire
- Zero
And to add the supply masters: the M4 lorry, the Jeep, the amphibious DWK (Spell?) and the C-47.