A "prison chaser" is a soldier assigned to the task of guarding military prisoners who have been assigned and are performing fatigue detail.

When that training was complete, I was given temporary assignment as a prison chaser (guard in a Brig).

My first experience as a prison chaser wasn't all that pleasant. One burly, bald headed prisoner had given me a hard time.

According to Ronal Branson's website, he joined the U.S. military in 1963 and was assigned to Fort Belvoir, Virginia, where he became a "prison chaser", an individual who oversaw prison work detail.

Prison chaser

Meaning

Noun