Pistol: Browning Hi-Power
Rifle (bolt-action): Carcano; even easier to hit with it than K98
Rifle (semi-auto): G43
MG: The Scourge of God, the Zipper of Death, the Bringer of BRAAAP BRAAAP, the almighty MG42
SMG: MP40
Aircraft: don't fly, except occasionally spotters
Anti-Tank: Panzerschrek
Tank: StuG 40, just because it looks baaaad
Other vehicle: a tie between VW Käfer and the locomotive