Sergeant Major Granados enlisted in the Marine Corps on 21 December 1998 and underwent 2nd Recruit Training Regiment, Golf Company, Marine Corps Recruit Depot San Diego, California on January 10, 1999. Upon completion of recruit training, Private First Class Granados attended the School of Infantry (SOI West) Camp Pendleton, California for Military Occupational Skill (MOS) training as a 0311 Infantry Rifleman. Following graduation, he received orders to Company L, 3rd Battalion, 1st Marines, 1st Marine Division, Camp Pendleton California for duty. During his first assignment, he served as a platoon radio operator and deployed with Battalion Landing Team (BLT) 3/1, 11th Marine Expeditionary Unit (MEU). In January 2000, he was promoted to the rank of LCpl Corporal and served as a Team leader. In January 2002, he was promoted meritoriously to the rank of Corporal and deployed with 13TH MEU as a Squad leader. In January 2003, Corporal Granados deployed to Iraq in support of OPERATION IRAQI FREEDOM (OIF.1) and was promoted to the rank of Sergeant.
Upon return from OIF.1 in March 2004, Sergeant Granados received orders to Marine Combat Instructor Course, Camp Pendleton, California for duty. After attaining the MOS 0913, Combat Instructor he was assigned to Company C, Infantry Training Battalion (ITB). Sergeant Granados served eight cycles training rifleman skills to entry level students. In 2005 Sergeant Granados was promoted meritoriously to the rank of Staff Sergeant and served as a Platoon Commander for Company C. In January 2006, SSgt Granados reported to Advance Infantry training Battalion (AITB) where he served as an Infantry Squad leaders Course instructor, teaching Sergeants and Corporals in becoming qualified effective Infantry Squad leaders across the 1st Marine Division.
In May of 2007, Staff Sergeant Granados received orders to Company C, 1st Battalion 5th Marines, 1st Marine Division to serve as a Rifle Platoon Sergeant. Staff Sergeant Granados deployed with the 11th Marine Expeditionary Unit (MEU) from November 2007 to June 2008. During the deployment, he served as a Corporals Course Instructor aboard the USS Tarawa. On April 2009, Staff Sergeant Granados was promoted to the rank of Gunnery Sergeant and served as a Company Gunnery Sergeant. While deployed to Helmand Province, Afghanistan he participated in operation Khanjari “Strike of the Sword” from March 2009 to December 2009 in support of OPERATION ENDURING FREEDOM (OEF).
In May 2010 Gunnery Sergeant Granados received orders to Marine Corps Tactic and Operation Group (MCTOG) Twentynine Palms, California to serve as a Company Faculty advisor where he evaluate Company and Battalion level Combat Operation Center (COC) watch floors in support of Tactical MAGTF Integration Courses (TMIC), SPARTAN RESOLVE, and SPARTAN ADVANCE. In October 2011, Gunnery Sergeant Granados held the billet of SPARTAN RESOLVE SNCOIC. On May 2013, Gunnery Sergeant Granados executed orders to 2nd Battalion, 5th Marines 1st Marine Division, Camp Pendleton, California and served as Company Gunnery Sergeant with Vertical Assault Company G, 2d Battalion, 5th Marines and deployed with the 31ST MEU to Okinawa, Japan. In June 2014, Gunnery Sergeant Granados was frocked to the rank of First Sergeant and became the Company First Sergeant for Company G.
In February 2015, First Sergeant Granados reported to Edson Range, Weapons and Field Training Battalion, Camp Pendleton, California and was assigned to Range Company to serve as a Company First Sergeant and on March of 2016 he was reassigned to Field Company. In 2016, 1stSgt Granados received a bachelor's degree in Social and Criminal Justice from Ashford University. On January 2017, 1stSgt Granados received orders to United States Special Operation Command, Camp Lejeune, North Carolina and was assigned as the Company 1stSgt, Logistics Company, 3D Marine Raider Support Battalion.
In November 2017, 1stSgt Granados was selected to rank of Sergeant Major and was frocked on March 30, 2018 and reported to 2D Transportation Support Battalion, Combat Logistics Regiment- 2, Camp Lejeune, North Carolina. On October 2, 2018, Sergeant Major Granados received orders to Combat Logistics Battalion-24 for duty. On April 2019, SgtMaj Granados deployed to Europe with CLB-24 and observed all operational commitments from the Marines postured abroad. During his assignment, he conducted multiple field operations in preparation for the Special Purpose MAGTF 19.2, Maritime rotation Force Europe-Norway. This consisted of bilateral training with all NATO forces throughout the European and African region. On May 15, 2020, Sergeant Major received orders to Twentynine Palms, California to serve as the 3d Battalion, 11th Marines Battalion Sergeant Major.
Sergeant Major Granados personal awards include the Meritorious Service Medal, the Navy & Marine Corps Commendation Medal with 3 gold stars in lieu of 4th Award, and Navy & Marine Corps Achievement Medal with 1 gold star in lieu of 2nd Award.
Sergeant Major Granados is married to Diana Granados.