Col. William ("Willie") Mastoris, Jr.
Deputy Commander and Chief of Staff
U.S. Army Support Command, Hawaii (USASCH)

Col. William (

Col. William Mastoris enlisted in 1945 before entering at the U.S. Military Academy, West Point. He graduated from the Academy in 1950 and went on to earn a Master of Science in International Affairs from George Washington University. Col. Mastoris became Deputy Commander/Chief of Staff for US Army Support Command, Hawaii (USASCH) on 1 July 1977.

Mastoris's other significant duty assignments prior to USASCH include the NATO International Military Committee in Brussels and Commander of the 95th Civil Affairs Group and then Deputy Chief of Staff for the XVIII Airborne Corps in Fort Bragg, North Carolina. Upon activation of Western Command, Mastoris became USASCH Commander.

Among the most prestigious awards for Mastoris are the Silver Star, the Legion of Merit, the Bronze Star Medal, and the Meritorious Service Medal.


USARPAC postures and prepares the force for unified land operations, responds to threats, sustains and protects the force, and builds military relationships that develop partner defense capacity in order to contribute to a stable and secure U.S. Pacific Command area of responsibility.


General Vincent K. Brooks Commanding General

Vincent K. Brooks

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