Learn: World War I & II Key Dates, Events, and Countries

What years did World War II last?

1939-1945.

When did the United States enter World War II?

1941.

What event officially started WWII?

Germany's invasion of Poland on September 1, 1939.

When was Pearl Harbor bombed?

December 7, 1941.

When did the U.S. declare war on Japan?

December 8, 1941.

Name three Allied countries in WWII.

Britain, Soviet Union, United States.

Name three Axis countries in WWII.

Germany, Italy, Japan.

What were the names of the atomic bombs dropped on Japan?

"Little Boy" and "Fat Man."

What bomber dropped the atomic bombs?

Enola Gay, piloted by Col. Paul Tibbets Jr.

What was D-Day and when did it happen?

The Normandy invasion (Operation Overlord), June 6, 1944.

When did Germany surrender in WWII?

May 8, 1945 (V-E Day).

When did Japan surrender in WWII?

August 15, 1945 (V-J Day).

When did Japan officially surrender?

September 2, 1945.

What years did World War I last?

1914-1918.

What event is considered the spark of World War I?

The assassination of Archduke Franz Ferdinand on June 28, 1914.