Which system contains the yearly ammunition needs for each unit?

The correct answer identifies TAMIS (The Army's Training Ammunition Management Information System) as the system that contains the yearly ammunition needs for each unit. TAMIS is pivotal in managing ammunition requirements and allocations, ensuring that each unit is supplied with the appropriate quantities necessary for training and operational readiness.

This system allows units to forecast their ammunition needs based on training schedules and operational plans, thus facilitating effective resource management. By using TAMIS, units can track expenditures and sustainment, ultimately optimizing their ammunition utilization throughout the training year.

In contrast, the other options serve different purposes; FLIS (Federal Logistics Information System) is primarily focused on logistics tracking and inventory management, while AMMO-61 is a form used for ammunition forecasts but does not directly contain the yearly needs data in a systematic way. DA Form 581 is used for requisitioning ammunition but does not encapsulate the overall yearly ammunition needs for a unit.