Final answer:
A unit requesting ammunition with three separate Training Event Codes must complete three separate DA Form 581s, one for each TEC, to accurately manage and account for the ammunition used for each distinct training event.
Step-by-step explanation:
When a unit is requesting ammunition using different Training Event Codes (TEC), they need to complete a separate DA Form 581 for each TEC. Since the unit is using three separate TECs, they need to complete three DA Form 581s.
The DA Form 581 is used for the request, issue, and turn-in of ammunition within the armed forces. Each form corresponds to a specific training event code because each code may represent a different type of training event, location, time, or resource requirement.
Therefore, it is important that the documentation accurately reflects the details for accountability and supply management.