muster out

1. phrasal verb, U.S. military, to summon to a muster in order to discharge from military service; to discharge from service (“muster, n.1”, OED); 2. attributive; see also muster roll

1.
“Colonel Leslie mustered out of the English army, probably in the 1800s some time, was given- They didn’t have pensions in those days. They gave them a tract of land.”

“My great-great-great grandfather came from Scotland. There were a group of about 500 Scots that came to settle. That was 1773, and of course the American Revolution broke out shortly after, so he joined the King’s Royal Rangers of New York, and after the war was mustered out of there.”

2.
“She told me that Turell MacDonald was her great grandfather and that he was allotted the Scotch Settlement as mustering out pay from the army.”