Almost four years.
For the Yanks it was from 1918 to 1941, 23 years. For the rest of us it was from 1918 to 1939, 21 years
War: 1914-1918 US military involvement: 1917-1918
about 33/4 years
The US was involved for 6 years from 1941-1945
The US was in the World War 2 from December 7/8th 1941 to August of 1945. They had to stay in Europe and Japan for many years after the war too.
they fought for 4 years December 7, 1941- 1945
about 20 years
The US joined World War 1 only in 1917 - three years after the war broke out.
about 6 years
3 years =)
no. there were several years of peace between the civil war and world war1
There are no more veterans of World War 1 alive. If they were alive they would be roughly 120 years old now.
World War 2
our coutryside and industries hadn't been ruined by years of war and bombardment. plus many European nations owed the US for money and supplies they borrowed during the war.
405,400 US casualties are recorded for World War 2
1941 to 1945
It started in 1914