Sergeant Major Marcelino Del Valle Jr. is from New York, New York City and graduated from Cardinal Dougherty High School in Philadelphia Pennsylvania. He enlisted in the Marine Corps on May 8, 1987 and attended recruit training at MCRD, Parris Island, South Carolina. Following recruit training; Private Del Valle attended Infantry Training School (School of Infantry), at Camp Pendleton, California for his MOS training as a 0311 Infantryman.
In November 1987, Private First Class Del Valle was assigned to Echo Company 2/1 Camp Pendleton, California. September 1988, Del Valle transferred to Surveillance Target and Acquisition platoon 1/4 for duty as a scout, where he performed his duties as Infantryman Squad Leader and Scout Sniper.
In April 1992, Sergeant Del Valle was to 1st Marine Regiment and was assigned to run a Regimental Scout Sniper School.
In September of 1993, Sergeant Del Valle reported to 1st Force Reconnaissance Company for duty as a Scout Sniper. In March of 1994, Sergeant Del Valle received orders to 1sy Marine Division Scout Sniper School for duties as a Scout Sniper Instructor.
In June of 1996 Sergeant Del Valle received orders to 1st Battalion 4th Marines 1st Marines Division where he served as a Chief Scout Sniper, Scout Sniper Platoon. In July of 1997, Sergeant Del Valle received orders to Drill Instructor School Parris Island, South Carolina. In September of 2000, Staff Sergeant Del Valle was transferred to 3rd Battalion 6th Marines 2D Marine Division as CAAT Platoon Sgt. Scout Sniper Platoon Sgt and Plt Commander.
In May of 2004 GySgt Del Valle was assigned to the 4th MEB training center as the Designated Marksmanship Instructor and then the MEB Training SNCOIC. In July of 2005 GySgt Del Valle was assigned to the Personnel Exchange Program (PEP) to Colombia. August 2008 First Sergeant Del Valle was assigned to 2D Maintenance Battalion, 2D Marine Logistics Group, 2D Marine Division, In Jan 2013 First Sergeant Del Valle was assigned to 2D Reconnaissance Battalion. In January 2014 Sergeant Major Del Valle was assigned to Recruiting Station San Antonio.
Sergeant Major Del Valle’s personal awards include: Meritorious Service Medal, Navy Marine Corps Commendation Medal with four gold stars in lieu of fifth award, Navy Marine Corps Achievement Medal with one gold star in lieu of second award and Combat Action Ribbon with one gold star in lieu of second award.