Rob,
The 997th Field Artillery Battalion was attached to the 69th ID. Did you find his DD-214? If so, the unit mentioned should be his last duty assignment.
http://www.army.mil/cmh-pg/documents...b/69ID-ETO.htm
G033WD45 means that the campaign was authorized by General Order 33 of the War Department in 1945.
Army Good Conduct Medal
European/African/Middle Eastern Campaign Medal
Does that picture show any writing on the front of the Jeep?