Final answer:
The unit commander or the designated Physical Fitness Training coordinator must maintain an ABCP file on each Soldier enrolled in the program.
Step-by-step explanation:
An ABCP file stands for Army Body Composition Program file. The responsibility of maintaining an ABCP file at the unit on each Soldier enrolled in the program lies with the unit commander or the designated Physical Fitness Training (PFT) coordinator. They are responsible for ensuring that the Soldier's height, weight, and body fat percentage are accurately recorded and updated regularly in the ABCP file.
For example, if a Soldier's body fat percentage exceeds the standard set by the Army, they may be considered noncompliant with the ABCP and face certain consequences, such as being required to undergo a weight loss program or being subject to administrative actions.