“Before World War I, each chaplain was issued a flag on which was a Latin cross. Jewish chaplains eventually received flags with Tablets of the Law. In 1923, a field desk, folding organ and chests filled with 300 books of religious and patriotic songs were available.”
(Tools of the Trade, signage at the U.S. Army Chaplain Corps Museum, Ft. Jackson, SC)
Portable record players were often carried by chaplains for services away from chapels. Above is a WW2-era record player. Notice the crank on the left for winding up the record player to provide power and the chrome lid on the right front corner that holds extra needles (author’s collection).