If you are short of everything except enemy, you are in combat. When you have secured an area, don't forget to tell the enemy. Incoming fire has the right-away. No combat ready unit has ever passed inspection. No inspection unit has ever passed combat.
Teamwork is essential.
It gives them other people to shoot at. If the enemy is in range, so are you. Friendly fire - isn't. Anything you do can get you shot - including doing nothing. Make it tough for the enemy to get in and you can't get out.