In May 1995 Lieutenant Colonel Delgado graduated with a Bachelor of Science degree in Political Science and obtained a commission as a Marine Second Lieutenant.
Immediately upon receiving his commission he attended The Basic School (TBS) in Quantico, VA followed by the Field Artillery Officer Course (FAOBC) in Ft. Sill, OK. After leaving Ft. Sill in May 1996, Second Lieutenant Delgado reported to Echo Battery, 2nd Battalion, 11th Marines, 1st Marine Division as a Forward Observer. From January 1997 through February 1998 Lieutenant Delgado served as Battery Liaison Officer and Executive Officer for Golf Battery 2/11. He concluded his tour with 11th Marines as the Executive Officer of Fox Battery 2/11 from February through May 1998.
In June 1998, First Lieutenant Delgado reported aboard Recruiting Station Albuquerque to serve as the Officer Selection Officer (OSO) El Paso, Texas. He opened the office in August 1998 and maintained that role until February 2001 when Captain Delgado resigned his active duty commission.
In August 2002, he joined the Marine Corps Reserve serving as the S-4, Current Operations Officer at 14th Marines. In July 2003, Captain Delgado assumed duties as the Regimental Fire Direction Officer for 14th Marines, fulfilling that billet until deployment to Combined Joint Task Force Horn of Africa (CJTF-HOA) in Djibouti, Africa in September 2005.
While on deployment to CJTF-HOA, Major Delgado served as a Country Desk Officer in the J3 section, for several countries throughout the Horn before being selected to serve as the Country Coordination Element (CCE) in Uganda, Africa. As the CCE in Uganda, he supported all CJTF-HOA operations in Uganda to include a mil to mil training mission. Upon returning from deployment in September 2006, Major Delgado transferred from 14th Marine Regiment to Delta Battery, 2nd Battalion, 14th Marines to serve as Executive Officer. At that time, Battery D was beginning its transition from the M198 howitzer to the High Mobility Artillery Rocket System (HIMARS). In June 2007, Major Delgado assumed duties as Commanding Officer, Rocket Battery D, 2nd Battalion, 14th Marines.
In January 2009, Major Delgado led Rocket Battery D on deployment to Helmand Province Afghanistan initially serving under the Special Purpose Marine Air Ground Task Force – Afghanistan in support of Operation Enduring Freedom. Battery D was the first Marine Corps HIMARS battery to deploy to Afghanistan and under his command established three firing positions and fired 52 rockets in combat operations. In February 2010 he gave up command of the battery and became the 2nd Battalion, 14th Marines Liaison Officer until March 2011 when he assumed his duties as the Battalion Executive Officer through August 2012. In August 2012 through November 2014 he served as Operations Officer (S-3) at 14th Marines Regiment until November 2014 when he became the Regimental Logistics Officer (S-4).
His personal awards included the Joint Commendation Medal, Navy-Marine Corps Commendation Medal with gold star in lieu of second award and the Navy-Marine Corps Achievement Medal.