 General Ludwig Kübler 's XLIX Corps would conduct the actual attack on the Rock . The assault forces would comprise the Infantry Regiment Großdeutschland , the 98th Regiment of the 1st Mountain Division , 26 medium and heavy artillery battalions , three observation battalions , three engineer battalions , two smoke battalions , a detachment of 150 Brandenburgers , and up to 150 miniature remote controlled demolition vehicles ( <unk> ) , packed with high explosives . 
