SD2:Ar 66C

 is a German Air unit in Steel Division II.

Background
Arado Ar 66 was a a German single-engined, two-seat trainer biplane that was used in the Eastern front as a night bomber following the Soviet Union's use of Po-2 Recon Plane. These biplane were used in Störkampfstaffeln Night-harassing squadrons which were expanded into Night Ground Attack Groups Nachtschlachtgruppen.