TM 10-8470-204-1, TECHNICAL MANUAL: OPERATOR\'S MANUAL FOR ADVANCED COMBAT HELMET (ACH) (14-MAR-2008)

TM 10-8470-204-1, TECHNICAL MANUAL: OPERATOR\'S MANUAL FOR ADVANCED COMBAT HELMET (ACH) (14-MAR-2008)., This manual covers the basic fitting and use instructions for the Advanced Combat Helmet (ACH), hereafter referred to as the ACH or the helmet.