Cheats only valid with v1.03 and will not function in Multiplayer games...
All steps to enable Cheats must be performed after a mission has begun.
OVERVIEW--Press and hold "Ctrl" and "F12" key simultaneously (repeat step to disable) to show big map of battlefield)
RELOAD--Press and hold "Alt" key, "Shift" key then "R" key simultaneously to load maximum amount of ammunition)
REPAIR--Press and hold "Alt" key, "Shift" key, then press "D" key simultaneously to repair all damage)
INDESTRUCTIBLE--Press and hold "Alt" key, "Shift" key, then press "I" key simultaneously to make your tank indestructible (each tank must be enabled separately)