A couple of commands that would be very useful, AND would make the game more realistic.
MARK FOR DEATH
Sets a persistent target. If line of sight between unit and it's target is broken, unit will ignore other targets and remain ready to shoot at the persistent target.
EXTENDED AMBUSH COMMANDS:
LINE OF DEATH
Essentially same as ambush, but trigged when enemy crosses "line", instead of single spot.
AMBUSH SPECIFIC TARGET
Sets ambush for a specific target. Actual ambush is triggered when enemy croses "the line of death".