"Algeria-French Morocco, Tunisia, Sicily, Air Offensive Europe, Rome-Arno & Naples-Foggia" are campaign participation credits - named campaigns in which he took part. "GO 33 WD 45" = War Department General Orders Number 33 of 1945 - the official authority for these campaign credits. The above entitles him to one silver (in lieu of five bronze) and one bronze service stars on the service and suspension ribbons of of the European-African-Middle Eastern Theater Medal.
The above indicates his overseas time was spent in North Africa and Italy and that he spent some time in flight status. Very likely served with 12th Air Force.