First Sergeant entered the Marine Corps on 24 August 1999. He underwent recruit training at MCRD San Diego, California, in which he was meritoriously promoted to Private First Class upon graduation.
First Sergeant Delgadillo reported to the School of Infantry, Infantry Training Battalion for MOS training in November 1999. He graduated as a 0351 anti-tank assault man.
He served with Golf Company, 2nd Battalion 3rd Marines, 3rd Marine Regiment, 3rd Marine Division, Kaneohe Bay, Hawaii where he was assigned as an A-Gunner, Gunner, team leader, section leader from January 2000 to September 2004.
He deployed to Okinawa, Japan on a UDP where he attended training in MT Fuji Japan for cold weather training, as well as Australia for Operation Tandem thrust during the 7 month deployment. After returning from deployment in May 2001, he was assigned to the Fleet Assistance Program where he served as a Military Police Officer with MCBH, Kaneohe Bay, Hawaii for 7 months. After returning from FAP, he deployed two more times which one was with the 31st MEU where he conducted training and stops in Thailand, Singapore, and Korea. In which he was promoted to the rank of Lance Corporal, Corporal and Sergeant with this command.
First Sergeant Delgadillo reported to Edson Range serving as a Coach, Block NCO, and a PMI for Range Company from December 2004 to December 2007. He also competed in 2006 division Matches where he won a silver medal in the piston for individual match and a Gold medal in the team match
First Sergeant Delgadillo reported to 3rd Battalion 7th Marines 7th Marine Regiment, where he was assigned as a Section Leader and Platoon Sergeant in Weapons Company from December 2007 to May 2011. After 2 successful deployments to Iraq and Afghanistan, First Sergeant Delgadillo was promoted to the rank of Staff Sergeant while deployed to Iraq where he served as a platoon Sergeant for CAAT platoon, Weapons Company.
First Sergeant Delgadillo reported to Recruiting School, MCRD, San Diego, California where he received orders to Recruiting Station San Diego 12th Marine Corps District. He served as a canvasing recruiter in Recruiting Sub Station San Bernardino and a SNCOIC of Recruiting Sub Station Fontana from July 2011 to July 2014. He was meritoriously promoted to the rank of Gunnery Sergeant in July 2013.
Fist Sergeant Delgadillo reported to 2d Battalion, 4th Marines, 5th Marine Regiment, 1st Marine Division he was assigned to H&S and Echo Company, as Company Gunnery Sergeant and deployed twice with the 31st Marine Expeditionary Unit based out of Okinawa Japan.
In April of 2017, First Sergeant Delgadillo was promoted to his current rank and received orders to Combat Logistics Company 21 where he is serving as Company First Sergeant.
First Sergeant Delgadillo’s personal decorations include the Purple Heart Medal, Navy and Marine Corps Achievement Medal with two Gold stars and the Combat Action Ribbon.