Father Joe "JoJo" Coughlin, Artifact, Second Chemical Battalion?

I am looking for information on a Priest/Father who served in WWII, Father Joe "JoJo" Coughlin. He sent my grandfather an artifact in 1942 or 1943 with a noted written on stationary with the letterhead, Headquarters Second Chemical Battalion, Office of the Battalion Commander. I believe these were obtained in Sicily/Italy. My grandfather lived in NYC and was from Rhode Island. He was involved with Catholic Charities during his life. Father Coughlin addressed him as "Sarg"