On my grandfathers Veteran Burial Listing:

GEORGE ZABLOCKY

County: WAYNE
Date of Birth: July, 5 1928
Date of Death: August, 1 2006
Veteran of: World War II
Served in: Army
Dates of Service: February, 26 1946 to January, 9 1949
Organizations(s): 7001st.ASU HQ.MDW DET. #1
Rank:PFC.

What does the Organizations mean/or stand for? Wondering if anyone knows what that information means? I've tried searching it and can't figure it out. Thank for your help!

Nicole