The Atomic Bomb?
There can be no doubt that the most deadliest weapon of world war 2 was the nuclear bombs that dropped on Hiroshima.
The A-bomb.
American Civil War
musket
hahahahaha
World War II is the deadliest war in history.
Deadliest battle America has been involved in to date was the Battle of Meuse-Argonne in WWI (26,277 deaths) Deadliest battle on American soil was Gettysburg in US Civil War (7,863)
Adem Bomb dropped by American b12 bomber
Most likely it was the M-1 Rifle.
Little known by today's generation; the deadliest naval weapon (discounting Kamikazes) of WWII was the oxygen fueled "Long Lance" torpedo.
Do you mean battle? Anyway, the deadliest battle of the American Civil War was the Battle of Gettysburg with a total of 46,000 to 51,000 casualties in three days! The Battle of Antietam was the deadliest ONE day battle with a total of 23,000 casualties!
The Civil War World War 1 The Revolutionary War