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World War II, Pacific War
Part of World War II, Pacific War
LST-1048 beached at Tinian, September 1944
Date 24 July 1944 – 1 August 1944 Location Tinian, Mariana Islands Result American victory
Combatants
United States	Japan
Commanders
Harry Schmidt	Kiyochi Ogata
Strength
30,000 Marines	4,700 soldiers and 4,110 marine soldiers
Casualties
389 killed, 1,816 wounded	8,010 killed, 313 POW

The Battle of Tinian was a battle of the Pacific campaign of World War II, fought on the island of Tinian in the Mariana Islands from 24 July 1944 to 1 August 1944.

The American victory in the battle of Saipan made Tinian, 5.6 km (3.5 miles) south of Saipan, the next step in the Marianas campaign. The 2nd and 4th Marine Divisions landed on 24 July 1944, supported by naval bombardment and artillery firing across the strait from Saipan. A successful feint for the major settlement of Tinian Town diverted defenders from the actual landing site on the north of the Island.

The Japanese adopted the same stubborn defensive tactics as on Saipan, retreating during the day and attacking at night. The gentler terrain of Tinian allowed the attackers more effective use of tanks and artillery than in the mountains of Saipan, and the island was secured in only nine days of fighting. On 31 July the surviving Japanese launched a suicide charge.

Several hundred Japanese troops held out in the jungles for months. The garrison on Aguijan Island off the southwest cape of Tinian, commanded by Lieutenant Kinichi Yamada, held out until the end of the war, surrendering on 4 September 1945. The last holdout on Tinian, Murata Susumu, was not captured until 1953.

The battle of Tinian saw the first use of napalm in the Pacific. Of the 120 jettisonable tanks dropped during the operation, 25 contained the napalm mixture, and the remainder an oil-gasoline mixture. Of the entire number only 14 were duds, and eight of these were set afire by subsequent strafing runs. Carried by P-47 Thunderbolts, the "fire bombs", also known as napalm bombs burned away foliage concealing enemy installations.

After the battle, Tinian became an important base for further Allied operations in the Pacific Campaign. Camps were built for 50,000 troops. 15,000 SeaBees turned the island into the busiest airfield of the war, with six 2,400 m runways for attacks by B-29 Superfortress bombers on targets in the Philippines, the Ryukyu Islands and mainland Japan.

• U.S. Army Campaigns of World War II: Western Pacific
• WW2DB: The Marianas and the Great Turkey Shoot
• USCM Historical Monograph: The Seizure of Tinian