 Although built primarily as a trainer for the Luftwaffe, the type also performed other duties such as courier & liaison.From March 1945 an order was issued to concentrate all the available Bü 181s to be converted either to the ""tank busting"" role carrying four Panzerfaust anti-tank grenade launchers from wing-mounted launchers (C-3 subtype), with the launchers mounted on short pylons around halfway out from the wing roots, one below and one above the wing panel on each side anchoring the launchers' firing tubes near their forward ends, with the launchers remotely fired from the cockpit, or to the night harassment role carrying three 50 kg bombs (B-3 subtype), most likely inspired by the Soviet female nocturnal "Nochnye Vedmy" units' campaigns from 1942 to V-E Day.These units saw very limited use in the final days of the war due to the war situation.