Marine Corps Reference Publication (MCRP) 3-0A, Unit Training Management Guide, assists unit commanders and their staffs in the preparation of unit training programs. It provides a background on the philosophy, principles, and policies of the Marine Corps training management system. It also provides guidance on how to support and evaluate training plans. This publication was prepared primarily for operations officers at the battalion/squadron level and above throughout the Fleet Marine Force. However, the philosophy and procedures contained herein may be applied by all training managers and trainers, regardless of the size of their unit. This publication reflects the methodology and techniques developed over the years to improve the Marine Corps' overall training effort. It may also be used as a reference tool to train the trainers and to evaluate unit training management. This publication supersedes FMFM 0-1, Unit Training Management Guide, dated 15 April 1991.