I'm remembering all the shots from the Pearl Harbor raid with sailors doing anti-aircraft duty with 1903s. I'm not sure the Navy had made the transition to the M1Garand by Pearl. In 1944, my father shot first in his class on the Garand at Naval Induction Station Great Lakes, so the transition had made it to the induction stations by then. I still remember small arms inventories from large ships that had 1903s in their armory far into 1943. I think, I think, the armory inventory of USS Wisconsin, parked down the road from me, which was completed in 1944, listed 1903s when I visited last. Could be wrong on that one.
Bob