Simplify the following text for a Grade 12 native English-speaking person.
Original: At `` Flugplatz Bamberg-Breitenau '' are operating mostly public aircraft , although it is classified as a military airport ( IATA-Code : ZCD , ICAO-Code : ETEJ ) .
Simplified: At `` Flugplatz Bamberg-Breitenau '' are operating mostly public aircraft , although it is classificated as a military airport ( IATA-Code : ZCD , ICAO-Code : ETEJ ) .