In March 1944, he was assigned to E Company, 2nd Battalion, 28th Marine Regiment, 5th Marine Division at Camp Pendleton, CA.
He joined Company E, 2nd Battalion, 28th Marine Regiment, 5th Marine Division at Camp Pendleton, California and on October 24, Block was promoted to corporal.
Among the more famous performers who were accompanied by the Camp Pendleton color guard have been Frankie Laine, Herb Alpert, Wilson Phillips, Jewel, Trisha Yearwood and the Dixie Chicks, all of whom had performed the National Anthem at either a World Series game, Super Bowl, or, in Wilson Phillips' case, a Major League Baseball All-Star Game that was played at what is now Qualcomm Stadium.
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The Marine base only became a reality due to the perseverance of its first commanding officer, Colonel Joseph Henry Pendleton (later a general and the namesake of Camp Pendleton).
In September 1987, Sergeant Major Barrett was assigned to 3rd Battalion 9th Marines at Marine Corps Base Camp Pendleton, and trained as a Scout Sniper to serve as a platoon sergeant for the unit's STA platoon.
The airfield is also known as Munn Field in honor of Lieutenant General John C. "Toby" Munn, the first Marine Aviator to serve as the Commanding General of Marine Corps Base Camp Pendleton.