Sunday · September 27, 2026
Edited daily
American history, reported as it happened
Made for the 250th
1944military

Saipan falls to Smith's Marines and infantry; Japan's inner defense ring is broken

Twenty-four days through caves, cane fields, and Tapotchau's slopes: 3,100 Americans dead, 13,000 wounded, and roughly 30,000 Japanese killed.

By June 1944, the Marianas sat inside Japan's "Absolute National Defense Zone," the last shield protecting the home islands from long-range bombers. On June 15, the U.S. 2nd and 4th Marine Divisions, joined by the Army's 27th Infantry Division under Lieutenant General Holland Smith, waded ashore at Saipan against Lieutenant General Yoshitsugu Saitō's dug-in 43rd Division. Twenty-four days of fighting through caves, cane fields, and the slopes of Mount Tapotchau ended on July 9 with the island in American hands. The cost was staggering: roughly 30,000 Japanese dead against 3,100 American killed and 13,000 wounded.

Saipan, Mariana Islands
The American Throughline

Saipan's airfields put Tokyo within range of the B-29 for the first time, turning a Pacific island battle into the opening move of the strategic bombing campaign that would end the war. The battle also convinced American planners that Japan would fight to near-total annihilation rather than surrender, a lesson that shaped the casualty projections behind the decision to use the atomic bomb a year later.

Did you know
QWhat did American soldiers call the tanks that burned out Japanese cave defenses?

Marines and soldiers converted M3 Stuart light tanks into flame-throwing vehicles they nicknamed "Satans." Saipan's volcanic terrain was riddled with limestone caves that riflemen alone could not clear, so these modified tanks pumped burning fuel directly into cave mouths and bunkers dug into the slopes of Mount Tapotchau. The nickname stuck for the rest of the Pacific campaign, and similar flame tanks became standard equipment for every major island assault that followed, from Peleliu to Okinawa.

QDid Hideki Tōjō try to take his own life after Japan's surrender?

Yes. When American forces came to arrest him in September 1945, Tōjō shot himself but survived. He was quoted afterward saying he was sorry it was taking him so long to die, that he still believed the war had been righteous, and that he awaited the judgment of history. American doctors saved him, and he stood trial before the International Military Tribunal for the Far East, where he was convicted and executed in 1948.

QHow many civilians lived on Saipan before the invasion, and what were they doing there?

Saipan held roughly 26,000 to 28,000 civilians, most of them tied to the island's sugar industry in towns like Garapan, Charan Kanoa, and Tanapag. They were not military personnel but ordinary residents of a Japanese-administered island who found themselves in the middle of one of the war's bloodiest battles. An estimated 8,000 to 10,000 of them died, and around 1,000 committed suicide in the final days, many jumping off cliffs near Marpi Point after Japanese propaganda convinced them that capture meant torture.

More from July 9
1863

Gardner surrenders Port Hudson; the Union holds the Mississippi from source to sea

After 48 days on the bluff, half his men sick and the food gone, the Confederate general yields the last rebel stronghold on the river.
1868

Seward proclaims it law: the Fourteenth Amendment is part of the Constitution

The amendment settles in the document what Dred Scott left open, granting citizenship and equal protection to anyone born on American soil.
17761776 Club
Howe is massing troops on Staten Island, and the men who just heard the words that made them revolutionaries will face them within weeks.
Read this as a member →
19621776 Club
The 1.4-megaton blast, 900 miles from Honolulu, paints bands of light from Samoa to New Zealand; hotel guests watch from rooftops.
Read this as a member →
Read the full July 9 edition →Everything that happened on July 9 →
More from The World Wars
1936

Owens takes 100-meter gold in Hitler's stadium, 10.3 seconds

The first of four gold medals, run in the stadium Hitler built to prove Aryan supremacy.
1945

The Enola Gay drops the first atomic bomb used in war on Hiroshima

Three-quarters of the city is gone within seconds; the pilot named the plane for his mother.
1929

A German airship lifts off from New Jersey to fly around the world

Hearst money bought the trip; a New Jersey field bought its start and finish.
1942

In the dark off Guadalcanal, Mikawa's cruisers sink four Allied warships in under an hour

Then, fearing carriers that had already left, the Japanese admiral turns north and leaves the invasion transports untouched.
The Daily Record · free by email

Tomorrow's edition in your inbox — one featured story, one quote, and today's flag status. Free, every morning.

The full experience

Read every story, narrated, in the app.

Take this story with you.

The complete daily edition, the deep-cut narration, and a library that's yours — the 1776 Club lives in the app.

Your membership comes with you — every event, narrated, with flag alerts, CarPlay, and your saved library.

Download on the App Store