Colonel del Valle was commissioned in 1989. Following The Basic School and Infantry Officers Course he reported to 1st Battalion, 1st Marines as a platoon commander, deployed to the Gulf War and then a WestPac deployment with 13th MEU. He would later serve as a series commander and executive officer with 1st Battalion, Recruit Training Regiment, aboard Marine Corps Recruit Depot, Parris Island. He would then transfer to the reserves in 1994 and serve as a platoon commander and forward observer with M battery, 4th Battalion, 14th Marines, Chattanooga, TN.
After transferring to the Inactive Ready Reserve and finishing graduate school, Captain del Valle returned to the reserves and reported to 4th ANGLICO for duty as a SALT Team Leader. He was later mobilized and served with MILGRP, Costa Rica as an Operations Officer, during which time he was promoted to Major. Upon his return, he was assigned as a Future Plans Officer with MARFORSOUTH, and later as a Civil Affairs Team Leader with 3rd Civil Affairs Group. Major del Valle served as a Peacetime/Wartime Support Team OIC for 6th Communications Battalion and was promoted to Lieutenant Colonel in 2008. Lieutenant Colonel del Valle then served as the Deputy Director, CJ-9 and Civil Affairs Officer within the G-9, 4th Civil Affairs Group before being mobilized to serve as a Security Cooperation Team OIC with MARFORSOUTH, and again mobilized as a Deputy J-3, CF-J. Colonel del Valle was promoted to his current rank in December, 2014.
Colonel del Valle's personal awards include: Defense Meritorious Service Medal, Navy and Marine Corps Commendation Medal, Joint Service Achievement Medal, Navy and Marine Corps Achievement Medal and Combat Action Ribbon. He is authorized to wear the Navy and Marine Corps Parachutist Insignia.
Colonel del Valle has a Bachelor's of Science in Mechanical Engineering from Virginia Military Institute and a Masters of Business Administration from Cornell University. He is a graduate of Marine Corps Command and Staff College and Amphibious Warfare School.