Does anyone have an idea of what the western AA Command unit's role was in WWII. My grandfather brought home a patch (along with a 4th army, 75th inf div as well). He was discharged out of the 3429th ORD MAM Company and might have served in Company F of the 423rd Inf. (106th Div.) according to a paper we have. Its all kind of confusing. I also have a 73d Ord. Bn. unit crest lapel pin to add to the mess.