I stand corrected. Some of the C models did see combat.
A total of 210 Ar-234Bs and 14 Ar-234Cs were delivered to the Luftwaffe, but with Germany in chaos, only a handful ever got into combat. A final inventory taken on 10 April 1945 listed 38 in service, including 12 bombers, 24 reconnaissance machines, and 2 night fighters. These aircraft continued to fight in a scattered and ineffective fashion until Germany surrendered on 8 May 1945. Some were shot down in air combat, destroyed by flak (sometimes their own), or bounced by Allied fighters when they came in to land. Others performed their missions and then fled too fast for enemy fighters to follow, to land and then wait for scarce fuel to be found so they could fly more missions.