Might be one of these.
http://www.mobygames.com/game/missionforce-cyberstorm
http://www.mobygames.com/game/cybers...corporate-wars
Do you remember when you played it? We don't need the exact year, just some kind of cut-off date to help narrow the search.
Did the game run in DOS or in Windows?
Were the graphics isometric or top-down?