Halftrack M2, M3 and M16

Halftrack M2 Light Armored, owned by Pavel Petr
The M2 was intended for use as an artillery tractor.
Halftrack M3 Light Armored, owned by Pavel Rogl
was an American light armored personnel carrier, used by the Allies during WW II.

Halftrack M16 Multiple Gun Motor Carriage
The M16 was an American self-propelled anti-aircraft weapon built during WW II. It was equipped with four 0.5 inch (12.7 mm) M2 Browning machine guns in a M45 Quadmount. Produced by White Motor Company from May 1943 to March 1944.