They thought of a lot of crazy ass things back then (and I'm sure still do). My personal favorite is the
Bat Bomb. The idea was to have thousands of bats inside of a "bomb" that would drop from a plane. The bomb was essentially a large canister that would deploy a parachute allowing the bats to fly from it. The nice thing about bats is that they can easily be enticed to hibernate so only when the bombs were released and the canisters open would they awaken.
Each bat would be carrying small amounts of time-delayed napalm devices and when the bats are released they would instinctively look for shelter, such as the extremely flammable wooden Japanese buildings, which would set these buildings to flames.
The idea was to drop millions of these bats over the industrial parts of Japan and completely wipe out sections with little loss of life.
Project X-Ray got approved all the way to the President and all tests were highly successful, so successful that some bats escaped during one experiment and set their base on fire.
http://en.wikipedia.org/wiki/Bat_bomb