By: History.com Editors

1945

Fighting on Iwo Jima ends, island declared “secure”

Published: November 05, 2009

Last Updated: January 31, 2025

The west Pacific volcanic island of Iwo Jima is declared secured by the U.S. military after weeks of fiercely fighting its Japanese defenders.

The Americans began applying pressure to the Japanese defense of Iwo Jima in February 1944, when B-24 and B-25 bombers raided the island for 74 days straight. It was the longest pre-invasion bombardment of the war, necessary because of the extent to which the Japanese–21,000 strong–fortified the island, above and below ground, including a network of caves. Underwater demolition teams (“frogmen”) were dispatched by the Americans just before the actual invasion to clear the shores of mines and any other obstacles that could obstruct an invading force. In fact, the Japanese mistook the frogmen for an invasion force and killed 170 of them.

Battle of Iwo Jima

On February 19, 1945, American soldiers make their first strike on the Japanese Home Islands at Iwo Jima.

The amphibious landings of Marines began the morning of February 19, 1945, as the secretary of the Navy, James Forrestal, accompanied by journalists, surveyed the scene from a command ship offshore. The Marines made their way onto the island–and seven Japanese battalions opened fire, obliterating them. By that evening, more than 550 Marines were dead and more than 1,800 were wounded.

In the face of such fierce counterattack, the Americans reconciled themselves to the fact that Iwo Jima could be taken only one yard at a time. A key position on the island was Mt. Suribachi, the center of the Japanese defense. The 28th Marine Regiment closed in and around the base of the volcanic mountain at the rate of 400 yards per day, employing flamethrowers, grenades, and demolition charges against the Japanese that were hidden in caves and pillboxes (low concrete emplacements for machine-gun nests). Approximately 40 Marines finally began a climb up the volcanic ash mountain, which was smoking from the constant bombardment, and at 10 a.m. on February 23, a half-dozen Marines raised an American flag at its peak, using a pipe as a flag post. Two photographers caught a restaging of the flag raising for posterity, creating one of the most reproduced images of the war. With Mt. Suribachi claimed, one-third of Iwo Jima was under American control.

On March 14, the U.S. announced its occupation of the island, but fighting didn't cease for almost two more weeks. On March 26, with a U.S. Navy military government established, Iwo Jima was declared secured. When all was done, more than 6,000 Marines died fighting for the island, along with almost all the 21,000 Japanese soldiers trying to defend it.

Timeline

Also on This Day in History

Discover more of the major events, famous births, notable deaths and everything else history-making that happened on March 26th

About the author

HISTORY.com works with a wide range of writers and editors to create accurate and informative content. All articles are regularly reviewed and updated by the HISTORY.com team. Articles with the “HISTORY.com Editors” byline have been written or edited by the HISTORY.com editors, including Amanda Onion, Missy Sullivan, Matt Mullen and Christian Zapata.

Fact Check

We strive for accuracy and fairness. But if you see something that doesn't look right, click here to contact us! HISTORY reviews and updates its content regularly to ensure it is complete and accurate.

Citation Information

Article title
Fighting on Iwo Jima ends, island declared “secure”
Website Name
History
Date Accessed
March 25, 2025
Publisher
A&E Television Networks
Last Updated
January 31, 2025
Original Published Date
November 05, 2009

History Every Day

Sign Up for "This Day in History"

Uncover fascinating moments from the past every day! Learn something new with key events in history, from the American Revolution to pop culture, crime and more.

By submitting your information, you agree to receive emails from HISTORY and A+E Global Media. You can opt out at any time. You must be 16 years or older and a resident of the United States.