If the above is the unit noted on his discharge papers it's simply the unit to which he was assigned - the custodian of his records - while being processed out of service. Probably not the unit he served with overseas. ETO (or EAME) = European-African-Middle Eastern Theater Medal. Four bronze stars represent campaign credits - one such device for each designated campaign in which he took part. Radar Operator MOS (Military Occupational Specialty) suggests possible duty with Army Air Forces overseas. Need more information.