Yes or be shot.
The same applies to any other religious group within the military.
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
There are a huge number of crosses at the U.S. Military Cemetery in Normandy...... A lot of Stars of David too....
Never saw a Crescent Moon there....