The Battle of Stalingrad was the deadliest battle to take place during the Second World War and is one of the bloodiest battles in the history of warfare, with an estimated 2 million total casualties.
The Most Deadly Battle In History: Stalingrad
The figures for the Battle of Stalingrad battle are shocking even by the standards of the other campaigns on this list. Running from August 23, 1942 to February 2, 1943, Stalingrad led to 633,000 battle deaths.
The bloodiest single day in the history of the United States Military was June 6, 1944, with 2,500 soldiers killed during the Invasion of Normandy on D-Day.
The high tide of the Axis powers—and the most lethal year of the Holocaust—came in 1942, as the Germans ran amok in the Soviet Union and the Japanese smashed the Western empires in Asia.
In terms of total numbers, the Soviet Union bore an incredible brunt of casualties during WWII. An estimated 16,825,000 people died in the war, over 15% of its population.
The American Civil War is the conflict with the largest number of American military fatalities in history. In fact, the Civil War's death toll is comparable to all other major wars combined, the deadliest of which were the World Wars, which have a combined death toll of more than 520,000 American fatalities.
GDANSK, Poland (AP) _ At 4:45 a.m. on Sept. 1, 1939, the German battleship Schleswig-Holstein opened fire with its 15-inch guns on the Polish fort at Westerplatte guarding Gdansk harbor. They were the first shots of World War II.
History's Largest Army
But by 1945, the United States' military had reached a peak strength of 12 million soldiers, sailors and airmen. At no time before or since has a nation had so many of its citizens in uniform.
On May 5, 1945, in the Austrian North Tyrol, during the last days of the European Theatre of World War II, the Battle for Castle Itter took place. The castle itself is situated on a hill close to the village of Itter.
The Battle of Odžak was the last battle of World War II in Europe. The battle began on 19 April 1945 and lasted until 25 May 1945, 17 days after the end of the war in Europe.
If you mean “number of people killed”, then WW2 wins by a wide margin, with anywhere from 70–90 million people killed. If you mean by the amount of suffering caused to civilians, then WW2 again wins by a wide margin.
The longest war in history is believed to be the Reconquista (Spanish for Reconquest), with a duration of 781 years.
Battle of Antietam breaks out
Beginning early on the morning of September 17, 1862, Confederate and Union troops in the Civil War clash near Maryland's Antietam Creek in the bloodiest single day in American military history.
Some 60 million people died in World War II. On average, 27,000 people perished on each day between the invasion of Poland (September 1, 1939) and the formal surrender of Japan (September 2, 1945) — bombed, shot, stabbed, blown apart, incinerated, gassed, starved, or infected.
German troops invaded Poland on September 1, 1939, triggering World War II. In response to German aggression, Great Britain and France declared war on Nazi Germany.
By far the most costly war in terms of human life was World War II (1939–45), in which the total number of fatalities, including battle deaths and civilians of all countries, is estimated to have been 56.4 million, assuming 26.6 million Soviet fatalities and 7.8 million Chinese civilians were killed.
US lost five major wars after 1945
The US had won almost all the major wars it fought before 1945. However, the US was unable to get any significant victory in its wars abroad.