In 1944, the Japanese Imperial Army released over 9,000 air balloons filled with bombs and/or incendiaries and aimed them at US and Canadian cities, forests and farmlands. They were intended to wreak havoc, causing explosions and widespread fire but only around 1,000 of the balloons actually made it to their intended targets.
Fritz-X Guided Bomb
Goliath Tank Buster
Hitler's SECRET WEAPONS: V1
Hitler's SECRET WEAPONS: V2
Hitler's SECRET WEAPONS: V3
Did Hitler have an atom bomb?
Did Nazi Germany explode a nuclear bomb in its last days?
Nazi Superguns: Karl Gerat: Used in Warsaw Uprising...
Nazi Superguns: Schwerer Gustav and Dora
The Nazi scientist who made the V-2: Wernher von Braun
Nazi Secret Weapons: Wind Cannon: WindKanone