Jakobs's execution took place at the miniature rifle range in the grounds of the Tower of London on 15 August 1941. He was tied and blindfolded in a brown Windsor chair. Eight soldiers from the Holding battalion of the Scots Guards, armed with .303 Lee–Enfields, took aim at a white cotton target (the approximate size of a matchbook) pinned over Jakobs' heart. The squad fired in unison at 7:12 a.m. after being given a silent signal from Lieutenant-Colonel C.R. Gerard (Deputy Provost Marshal for London District). Jakobs died instantly. A postmortem examination found that one bullet had hit Jakobs in the heart and the other four had been on or around the marked target area. As three members of the eight-man firing squad had been issued with blanks, only five live rounds were used.