Definition: to dismiss from a military position due to a disciplinary issue
Why I Looked It Up
In Soldiers Of Reason: The RAND Corporation And The Rise Of The American Empire:
“We would become the first aggressors for peace.” For this opinion, President Truman immediately cashiered [Secretary of the Navy Francis] Matthews.
Later in the same book:
There were bound to be disappointments along the way. Such as the time he was ignominiously cashiered from RAND by Frank Wollbohn, in a fit of pique and resentment orchestrated by Bernard Brodie in 1963.