Incoming fire has the right of way.

Don't look conspicuous, it draws fire.

Try to look unimportant, they may be low on ammo.

If you can't remember, then the claymore is pointed at you.

Never draw fire, it irritates everyone around you.

Never share a foxhole with anyone braver than yourself.

When you have secured an area, don't forget to tell the enemy.

Never forget that your weapon is made by the lowest bidder...