 Nyora kuenderera kweiyi ndima - OKH yakapa mirairo yekugadzira Heavy Artillery Battalion Karl musi wa4 Chivabvu 1943 vachishandisa mota nemidziyo ye Heavy Artillery Battery 628. Iri rakava bhatiri rokutanga rebhatiri idzva apo rimwe bhatiri rakasimudzwa kubva pakutanga musi wa 15 May sezvakanga zviri dzimbahwe rebhatiri. Bhatiri rimwe nerimwe raiva neKarl-Geräte mbiri pamwe chete nerimwe raichengeterwa. 18th Army yeArmy Group North yakanga ine hurongwa hwekushandisa imwe Karl-Gerät kurwisa Oranienbaum Bridgeheadkumadokero kweLeningrad munguva yezhizha ra1943, asi bataiyoni yakarairwa kudzorera Karl-Geräte kuLeipzig musi wa8 Nyamavhuvhu. Kungofanana ne833rd, battalion yakarairwa kuti ivandudzwe ne8 21 cm Mörser 18 howitzers musi wa29 Nyamavhuvhu 1943 nekushanda musi wa10 Gunyana. Unity for Karl-Geräte Kommando für Karl-Geräte yakaumbwa musi iwoyo iwoyo sevatarisiri vezvombo. Izvi akanga redesignated Unit nokuda Special-Zvishandiso Heavy Artillery Battalion motorized Kommando für Sonder-Gerät des schwere Artillerie-Abteilung mot. 628 musi 2 June 1944. 