 Complete the following phrase:  OKH issued orders to create a Heavy Artillery Battalion Karl on 4 May 1943 using the vehicles and equipment of Heavy Artillery Battery 628. This became the first battery of the new battalion while the other battery was raised from scratch on 15 May as was the battalion headquarters. Each battery had two Karl-Geräte plus one in reserve. 18th Army of Army Group North had plans to use one Karl-Gerät against the 