Need help identifying pin

[maybullsmom]

I have a military pin that I am trying to identify. It belonged to my late father in law who was in the army. If anyone can help it would be great. Thanks

 

Amazon Forum Fav 👍

A History of Mining on the Kenai Peninsula, Alaska - Grab it through Amazon!

[paratrooper]

ARMY AIR DEFENSE ARTY SCHOOL SHOULDER CREST .