I'm returning to the Forum for more information, trying to find/confirm my Uncle Sgt Robert Miller's correct Marine unit. He was an artillery man and left a daily diary.
My initial research had him with the 15th Artillery.
However in re-reading his diary,he never landed on Okinawa until the third day(April 3)He did mention, "the infantry was too far ahead of us to do much good" On May 1,wrote, "We are traveling in convoy south to near Naha"
I hope this information helpful in trying to determine
my uncle's unit.