This manual, Soldier Training Publication STP 9-91J12-SM-TG Soldier's Manual and Trainer's Guide Quartermaster and Chemical Equipment Repairer MOS 91J Skill Levels 1 and 2 September 2019, identifies the individual Military Occupational Specialty (MOS) training requirements for Soldiers in MOS 91J Quartermaster and Chemical Equipment Repairer. This STP is the primary MOS reference to support the self-development and training of every 91J Soldier. This publication is for skill levels 1 and 2 Soldiers holding Military Occupational Specialty (MOS) 91J Quartermaster Chemical Equipment Repairer, for trainers and first-line supervisors. It contains standardized training objectives, in the form of task summaries, to train and evaluate Soldiers on critical tasks that support unit missions during wartime. Trainers and first-line supervisors should ensure Soldiers holding MOS 91J have access to this publication. This manual applies to both Active and Reserve Component Soldiers.