Maj Castilla is a native of Columbus, Ohio and serves as Company Commander for Weapons Company, 1stBattalion, 24th Marines in Perrysburg, Ohio.
In January 2014, he reported to Officer Candidate School in Quantico, Virginia and earned his commission in March 2014. 2ndLt Castilla reported to The Basic School the same month with Basic Officer Course 3-14 and, upon graduation, attended Infantry Officer Course 1-15.
Upon earning the 0302 MOS, 2ndLt Castilla was assigned to 1st Battalion, 7th Marines. Shortly after assignment, he was deployed to Al Asad Air Base in support of Special Purpose Marine Air Ground Task Force - Crisis Response - Central Command 16.1 as the Watch Officer for Task Force Al Asad from October 2015 to April 2016. Upon redeployment, 1stLt Castilla served as Platoon Commander, Combined Anti-Armor Team Red from May 2016 to April 2018. During this time, he again deployed to Al Asad Air Base, Iraq in support of Special Purpose Marine Air Ground Task Force - Crisis Response - Central Command 17.2 as the Security Force for Task Force Al Asad.
In June 2018, Capt Castilla received orders to Marine Combat Training Battalion, School of Infantry (West) where he served as Company Commander, Company H from July 2018 to July 2019 and Battalion Operations Officer from July 2019 to July 2020. Capt Castilla ended active service in July 2020.
Maj Castilla earned his Bachelor of Science in Political Science from Miami University in Oxford, Ohio and his Master's in Business Administration from Cornell University in Ithaca, New York. He currently resides in Granville, Ohio.