0
The United States entered World War II after the Japanese attack on Pearl Harbour on 7th December 1941. The US declared war on the following day, 8th December 1941.
Still curious? Ask our experts.
Chat with our AI personalities
RossEvery question is just a happy little opportunity.
Chat with Ross
TaigaEvery great hero faces trials, and you—yes, YOU—are no exception!
Chat with Taiga
ProfessorI will give you the most educated answer.
Chat with Professor
Add your answer:
Earn +20 ptsQ: What year did the us enter the world war 2?
Write your answer...
Submit
Still have questions?
Continue Learning about Military History
Why did us enter the Great War 2 and a half years after the war was started?
World War 2
In which year did America enter World War 1?
The US entered World War 1 on April 6, 1917. The war ended about one and a half years later.
When did the US enter World War 1 with Allies?
The US joined the war on the side of the Allies on April 6, 1917.
Who commanded the first group of US soldiers to enter the war of World War 1?
archduke ferdinand
Did the us enter world war 1 early or late?
The US entered when it declared war on Germany on April 6th 1917. So they entered late.
Trending Questions
What were the names of the beaches that the allies landed on d day?
In what year did a Virginia militia commander attempt an unsuccessful invasion of the Ohio valley?
What year did lend lease begin in World War 2?
What is Americas traditional methods in wars?
Definition of ethic Army?
What war was fought after World War 2?
What is value of Tokyo Bay postmark World War 2?
What is the significance of this in World War 1?
Why did Theodore Roosevelt send an American fleet to the Philippines?
What was the total deaths on d day June 6 1944?
What year did grant become lieutenant general of the union army?
How many people were killed at Midway?
Combatants of World War 2?
What impact did the arrival of American troops have on the course of the war?
Who were the military leaders in germany during world war 2?
Why is there a southern influence in northwest Missouri?
Did George Washington invent guerrilla warfare?
What happened when the SS Esso Pittsburgh broke in half off Halifax on the way to England in World War 2?
Why did the allied troops want to take the dardenelles?
Why does lee tell Longstreet to stay back from the main line in the battle to come?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.