sentences:  As was common practice for such units, the sappers wore khaki shorts and soot camouflage and were armed with either an AK-47 or RPG-7 and satchel charges and grenades to attack bunkers.Sappers relied on stealth, shock and surprise to give them an advantage, and rarely carried heavy weapons or equipment.The 409th was known to the intelligence section of the 196th LIB, but had previously operated against ARVN targets north of Quang Tin Province.