Colonel David C. Cox
Commanding Officer
4th Civil Affairs Group

Colonel David Cox, a native of New Jersey, graduated from Rutgers University School of Business with a degree in Finance and Seton Hall University School of Law with a Juris Doctor. He entered the Marine Corps in April 1997 through the Platoon Leaders Class (PLC). Upon completing Officer Candidate School, he was commissioned as a Second Lieutenant and subsequently designated a Judge Advocate upon completion of The Basic School and Naval Justice School.

From 1997-2001, Col Cox served as Administrative Law Officer, Trial Attorney, and Defense Counsel at the Legal Services Support Section, Headquarters and Service (H&S) Battalion, Camp Lejeune, North Carolina. In late 2001, he was selected to serve as the Commanding Officer, Service Company, H&S Battalion. In that capacity, he participated in the planning and subsequent deployment of his Company to Guantanamo Bay, Cuba, to construct the initial detainee camp for captured Taliban from Afghanistan. He then deployed to Iraq in support of Operation Iraqi Freedom (OIF-1).

In 2004, Col Cox relinquished his command, left Active Duty, and entered the ranks of the SMCR, joining 6th Motor Transport Battalion. He once again assumed command, “dual-hatting” as the Commanding Officer, H&S Company and Officer-in-Charge, Detachment 3, General Support Motor Transport Company.

In 2007, after successfully completing his command tour, he volunteered to augment 3d Battalion, 23rd Marines and again deploy to Iraq. He served in numerous billets over the course of pre-deployment and deployment, to include: Company Commander, Company Executive Officer, Camp Commandant (Mojave Viper), IO Officer, Judge Advocate, Civil Affairs Officer, Police Transition Team LNO, Rule of Law LOO Manager, and Detention Facility OIC.

Upon return from deployment, Col Cox was Board-selected to pursue a Master of Science in Strategic Intelligence at the National Defense Intelligence College (now the National Intelligence University). He immediately reported to his studies at the Defense Intelligence Agency (DIA).

In late 2009, Col Cox was mobilized as part of 3D Civil Affairs Group (since, re-flagged as 1stCAG). He deployed to Marjah, Afghanistan, where he served as a Civil Affairs Team Leader, Detachment Executive Officer, Regimental Civil-Military Operations Planner, and Regimental Non-Kinetics Targeting Officer.

Upon return from deployment, Col Cox completed Marine Air Ground Task Force Intelligence Officer Course and then returned to his studies at the DIA. In 2011, Col Cox transferred to Marine Forces Cyber Command (MARFORCYBER), where he served as a Special Projects Officer and Deputy Staff Judge Advocate.

In late 2012, Col Cox was requested to assist in the establishment of the newly formed 3D Civil Affairs Group in Great Lakes, Illinois. Over the course of the next four years, Col Cox served as a Detachment Commander, Battalion S-2, Command Security Manager, G-9 Operations Officer, and Operations Officer.

In June 2017, Col Cox assumed Battalion command of Intelligence Support Battalion, one of the most geographically dispersed and deployed units in the Reserves. During his tenure, Col Cox provided ready and capable Marines to support the Active Component, the Marine Corps Intelligence, Surveillance and Reconnaissance Enterprise (MCISRE), and the national Intelligence Community.

Col Cox relinquished command in June 2019 and immediately mobilized to deploy in support of Operation Inherent Resolve in Iraq and Syria. Col Cox established a new staff entity called the Northeast Syria Coordination Group responsible for managing over 100,000 detained ISIS fighters and their family members spread across Syria. In this capacity, he represented the Command while engaging foreign Government officials to negotiate repatriation of their citizens. Upon return from deployment, Col Cox was Board-selected to assume command of 4th Civil Affairs Group.

In addition to his operational assignments, Col Cox is an active participant in Marine Corps PME, having graduated from Amphibious Warfare School, Command and Staff College (Distinguished Graduate), the U.S. Army War College, and Joint Forces Staff College/National Defense University, where he was awarded the Commandant’s Writing Award.

As a civilian, Col Cox is a Supervisory Special Agent with the Federal Bureau of Investigation.