The Pacific Theater

Features May 1, 2011

On June 15, 1944, a massive U.S. invasion fleet stormed the beaches of Saipan, the largest of the Mariana Islands.
SHARE:

On June 15, 1944, a massive U.S. invasion fleet stormed the beaches of Saipan, the largest of the Mariana Islands. The capture of this strategic target would put Japan within reach of the Americans' new land-based, long-range B-29 bombers, and provide a possible base for an invasion of the country. Now, with a grant from the National Park Service American Battlefield Protection Program, maritime archaeologist Jennifer McKinnon is leading a project to survey a 12-mile stretch of Saipan's lagoons and record the battle's story through the remains of vehicles, weapons, and personal items left behind by nearly 100,000 Japanese and American troops.

"I want to define the scope and tactics of the whole Battle of Saipan," says McKinnon, "and also use archaeology to try to piece together individual engagements and finer details that may have had a bearing on its outcome." For example, McKinnon's team has found an LVT (Landing Vehicle Tracked—an amphibious vehicle introduced by the U.S. in World War II) with surprising evidence of battlefield modifications. Soldiers had added extra boilerplate to the LVT's bow and around the top of the unshielded gun, enhancing the vehicle's durability. This modification was previously unknown from either the historical or oral testimony. News of the change found its way back to the manufacturer, Food Machinery Corporation, where it became standard on a future model known as the "Marianas Model."

So far McKinnon's team has surveyed and mapped four airplanes—two American and two Japanese—three U.S. Sherman tanks, two Japanese Daihatsu landing craft, a possible Japanese sub chaser, a Japanese merchant ship that carried Korean conscripts, and several LVTs. These finds, in addition to the dozens more McKinnon knows from archaeological surveys and local sources, are in or immediately outside the lagoon and will be incorporated into a WWII underwater heritage trail.

Video: Operation Saipan

Slideshow: The Submerged Evidence of the Battle of Saipan

More Archaeology of World War II

  • Features July/August 2026

    Secrets of the Serpent

    Is a Native American origin story embedded in Ohio’s colossal earthwork?

    Read Article
    Serpent Mound
    Timothy E. Black
  • Features July/August 2026

    Slinging Insults

    Greek and Roman soldiers fired pointed barbs at their enemies

    Read Article
    Lead sling bullet inscribed with the Greek inscription MATHOU
    Courtesy Michael Eisenberg
  • Features July/August 2026

    Inside Africa’s Houses of Stone

    Archaeologists are rethinking how kings shared power beyond the great capitals of medieval Zimbabwe

    Read Article
    Ad/AdobeStock
  • Features July/August 2026

    Tennis, Anyone?

    Discovering the origins of the peculiar racket game that swept sixteenth-century France

    Read Article
    King Louis XIII's jeu de paume court at the Palace of Versailles
    © Denis Gliksman, Inrap