Sorry for delay, I have been getting back into routine after a 2 week roadtrip with my 2 year old., I appreciate all your responses Randy!
We stopped by the 45th division museum in Oklahoma City. It was an amazing museum!
They said the thing over his right pocket was his Ruptured Duck pin. One of his collars, I believe his left, was his engineers castle.
They said he would have been in the 45th (perhaps 120th engineers), then "transfered" to 125th just to be shipped home.
They gave me a copy of the paper to request his records. They said it normally is a long game of waiting & resending. Said it was typically to get the "Destroyed in the fire letter" the first time you request. And suggested making copies & to continue to resend.