From the trenches of France to the Pacific, the I Corps legacy endures

Cultures · Published 10 October 2026 Swipe more like this →

In short: Activated in 1918 to command American forces in Europe, the I Corps has evolved from a World War I combat formation into a modern administrative powerhouse. Today, it oversees critical army units across the Asia-Pacific region, maintaining a century-long tradition of strategic command that spans three major global conflicts.

The I Corps was first organized in January 1918 at Neufchâteau, France, under the command of Major General Hunter Liggett. During World War I, it played a pivotal role in repelling German offensives and spearheading the Meuse-Argonne Offensive. Following the war, the corps underwent several reorganizations, including periods in the Organized Reserve, before being fully activated for service in World War II. In the Pacific theater, the corps led Allied forces in the New Guinea campaign, securing a landmark victory at Buna-Gona in January 1943, which marked a turning point in the ground war against Japan.

The corps' involvement in the Korean War began in August 1950, shortly after its reactivation at Fort Bragg. For three years, it commanded a diverse coalition of US, British, and South Korean forces, engaging in intense campaigns from the Pusan perimeter to the Yalu River. Following the 1953 armistice, the I Corps remained in Korea for nearly two decades, guarding the Demilitarized Zone until its eventual replacement by the Third Republic of Korea Army in 1982.

Today, the I Corps is headquartered at Joint Base Lewis-McChord, Washington, serving as a major formation under the United States Army Pacific. While its historical roots are firmly planted in the battlefields of the 20th century, its current mission focuses on administrative oversight and power projection. Unlike many other military bases that downsized following the Cold War, Fort Lewis grew, solidifying the corps' position as a vital hub for mobilization in the Asia-Pacific region.

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