CINCPACSTAFF

• Origins in World War II: CINCPACSTAFF, or the staff of the Commander in Chief, U.S. Pacific Command (now INDOPACOM), traces its origins to World War II, when Admiral Chester W. Nimitz led Pacific Fleet operations from Pearl Harbor. • Key Role in Pacific Theater: The staff was instrumental in planning and executing major Pacific campaigns, including the Battles of Midway, Guadalcanal, and the island-hopping strategy that led to victory over Japan. • Historic Headquarters: During WWII, CINCPACSTAFF operated from the famous underground bunker at Makalapa, Pearl Harbor, which remains a historic site today. • First Unified Command: CINCPAC was the first unified command to be established under the Unified Command Plan in 1947, making CINCPACSTAFF the original joint staff in the U.S. military. • Cold War Frontline: Throughout the Cold War, the staff managed U.S. military operations across the vast Pacific, monitoring Soviet naval activity and supporting Korean and Vietnam War efforts. • Codebreaking and Intelligence: CINCPACSTAFF worked closely with cryptologic units, such as Station HYPO, playing a pivotal role in breaking Japanese codes before the Battle of Midway. • Transition to INDOPACOM: In 2018, the command was renamed U.S. Indo-Pacific Command (USINDOPACOM) to reflect growing strategic importance of the Indian Ocean, but the staff’s core mission persists. • Multinational Coordination: CINCPACSTAFF has a legacy of close partnership with allies like Australia, Japan, and South Korea, regularly hosting multinational planning and exercises. • Disaster Response: The staff has led U.S. military responses to major disasters in the Pacific, such as the 2004 Indian Ocean tsunami and the 2011 Japan earthquake and tsunami. • Notable Leaders: Many notable military leaders have served as CINCPAC or on its staff, including Admiral Nimitz, Admiral Harry Harris, and Admiral John Aquilino, shaping U.S. strategy in the Asia-Pacific.