Has anyone heard about an explosive device that can be placed against a wall (or the like) and when detonated the blast is directed towards the wall and blows a hole in it. Sounds like a shaped charge. I see that the Germans had a magnetic anti-tank mine called the Hafthohlladung and the British the Anti-Tank No. 74, commonly known as the 'sticky bomb' My late father in-law described seeing the devise when he took part in a training session (I think a street fighting course in or near Chelsea, London). The instructor, placed it on the wall (maybe it had a sticky pad?), pulled a cord and walked way (but not too far away) before it when off. Did the British have such a device as I've described, perhaps a modified 'sticky bomb?