Another proposal was for a semi-automatic version of the old 3.5 inch rocket launcher, fed from a six-round gravity-operated magazine, as an anti-bunker/pillbox weapon. Two bunkers/pillboxes could be taken out with one load. The first, second, fourth, and fifth rounds would have wooden warheads, and the third and sixth would have HE. The operator would creep around behind the target and fire three rounds at the door in succession. The first two would make a "knock knock" sound, and the third would enter through the now open door to kill the occupants.
Holly cow Batman what drugs were they on to come up with that one?