Call to Battle(1988)
(The seventh book in the There Will Be War series)
An anthology of stories edited by John F Carr and Jerry Pournelle
It is a nightmare world in which the Nazis won the war, Mexico conquered America, and the Inquisition stretches to the outer reaches of the solar system. Only a noble few can hope to hold the barbarians at bay, and they are rallying to a stentorian battle cry.
Used availability for John F Carr's Call to Battle
September 1988 : USA Mass Market Paperback