[QUOTE=Antistia...Im reasonbly sure, that apart from vehicles, soldiers always rack up the most kills (against the computer anyways)[/QUOTE]
Nope, it just depends on which unit you are best at.
Try and aim for a head shot. Its harder but it causes more damage. In SWBF it does matter where you shoot the enemy. Also pratice, pratice, pratice (if you have the time).