Since the game is out of print, you can typically find it on reputable archive sites:
: You will likely receive a .zip file containing an .iso image or a folder of game files. March! Download PC Game
: Go to Windows "Turn Windows features on or off," find Legacy Components , and ensure DirectPlay is checked. 5. Essential Gameplay Tips Since the game is out of print, you
: This is a wrapper that translates old DirectX calls to modern Direct3D 11/12. Drop the dgVoodooCpl.exe and the DLLs from the MS\x86 folder into the game's installation directory. " find Legacy Components
: Supplies can be scarce. Avoid using heavy ordnance on weak scout enemies.