Military History Institute
803d Engineer (Aviation) Battalion was an Air Corps unit so it wouldn't have been "division based" (whatever that means), anyway.
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The Military History Institute probably won’t have anything on the 803d (for the above reason) but you can try anyway.
If it’s of any interest (and it probably isn’t), the name of the ship that brought your Uncle Art’s remains home for burial in 1948 appears in his deceased file.