Recently the Marine Corps underwent another change in its training and education spectrum as Marine Corps Bulletin 1500, in its third iteration, was altered Feb. 20 to enhance the overall quality of operational readiness and the commander’s flexibility in training. The motivation for this set of changes to Marine Corps Bulletin 1500, a comprehensive list of all required annual training, was to optimize available training time so unit commanders can be provided with more flexible training schedules to conduct mission-oriented tasks. - Recently the Marine Corps underwent another change in its training and education spectrum as Marine Corps Bulletin 1500, in its third iteration, was altered Feb. 20 to enhance the overall quality of operational readiness and the commander’s flexibility in training. The motivation for this set of changes to Marine Corps Bulletin 1500, a comprehensive list of all required annual training, was to optimize available training time so unit commanders can be provided with more flexible training schedules to conduct mission-oriented tasks.