Parachute mines were no joke.
The UXB team in the UK was pretty amazing.
Re-engineered naval mines with a timer to go off above the ground. Sometimes with 2500 pounds of explosive....
Luftmine B (LMB): 1,000kg
If you ever wonder why the top floors of many "older" buildings around London look a little different than the ground floor - one of these was likely responsible. If they went off at the right altitude, they could flatten areas of a mile
But, do not fear. The Allies dropped some heavy, heavy **** back on Adolf. Blockbusters up to 22,000 pounds or so. (Grand Slam in the photo is a 22,000 pounder)
http://www.youtube.com/watch?v=BRsSDD5U0X8
Pecker head Germans used to put solenoid/light activated switches inside the bombs so if they were opened, they would go off too. That was to take care of the UXB troops and hinder efforts.