Auburn half-track and M46 Tank Note out-of-scale machine-gunners on both vehicles. (the half-track was crudely painted to simulate Wehrmacht markings)
Payton's US Troops - approximately 1/48 scale - O gauge
Marx Knights - note the superb details
The equally excellent Airfix Men-at-Arms
MPC's African natives - most have Zulu shields and assegais (short thrusting spears)
MPC Soviet troops (how'd Robbie the Robot get here?)