Cannon Fodder is an action-strategy shoot 'em up game developed by
Sensible Software and published by Virgin Interactive. Open Fodder is
a modern open source engine for it.

The game is military-themed and based on shooting action but with a
strategy game-style control system. The player directs troops through
numerous missions, battling enemy infantry, vehicles and
installations.

WWW: http://openfodder.com/