Advice and instructions taken from actual military sources. Some of these guys must have had a sense of humor.
"When the pin is pulled, Mr. Grenade is not our friend." --U.S. Marine Corps
"Cluster bombing from B-52s is very, very accurate. The bombs are guaranteed to always hit the ground." --USAF Ammo Troop
"Never tell the platoon sergeant you have nothing to do." --Unknown Marine Recruit
"Aim towards the enemy." --Instruction printed on U.S. Rocket Launcher