Colonel Robert J. Hallett’s initial fleet assignment was with Bravo Battery, 1st Battalion, 10th Marines where he held positions as a Forward Observer, Fire Support Team Leader with Fox Company, Battalion Landing Team (BLT) 2/2, Liaison Officer and Assistant Executive Officer. While assigned to the BLT, he deployed with 22nd MEU(SOC) and participated in Operation(s) JOINT ENDEAVOR in the Adriatic Sea, ASSURED RESPONSE in Monrovia, Liberia, and QUICK RESPONSE in the Central African Republic.
Lieutenant Hallett was then assigned to The Basic School, Marine Corps Base (MCB) Quantico in 1996 as Officer in Charge of the Artillery Demonstration Unit and was subsequently frocked to a Captain of Marines. Augmented as a Public Affairs Officer in 1997, he attended the Defense Information School with further assignment to the MCB Quantico Public Affairs Office. During that assignment, he was selected to be the MCB Quantico Commanding General’s Aide de Camp. Upon completion of that tour, Captain Hallett attended the Amphibious Warfare School, graduating in 2001.
From 2001 to 2003, Captain Hallett was assigned to 2nd Battalion, 10th Marines, where he served as the Golf Battery Commander and Battalion Logistics Officer. While in command of Golf Battery, Captain Hallett participated in two double Combined Arms Exercises, numerous ROLLING THUNDER exercises and a Maritime Prepositioning Force Offload Exercise in Zaragoza, Spain.
Captain Hallett was then assigned to 12th Marine Regiment as the Assistant Operations Officer and subsequently promoted to Major. In 2004, he deployed to Iraq as the I MEF Current Fires Officer participating in the Battle(s) for Fallujah and Najaf. He returned back to 12th Marines to assume his duties as Assistant Operations Officer and subsequent assignment to 3rd Battalion, 12th Marines as the Operations Officer and Executive Officer.
In June of 2006, Major Hallett returned to CONUS for school with the Marine Corps Command & Staff College. Upon graduation, he assumed duties with the National Military Command Center, J3, Joint Chiefs of Staff. During that three year period, he held numerous positions on the staff to include Surveillance Officer, Emergency Actions Officer, Assistant Deputy Director for Operations and Strike Officer. Promoted to Lieutenant Colonel during that time, he received orders to report back to 10th Marine Regiment in June 2010 where he served as both the Regimental Operations Officer and Executive Officer and was selected for artillery battalion command.
Lieutenant Colonel Hallett assumed command of 1st Battalion, 10th Marine Regiment, 2d Marine Division in July 2011. As “Nightmare 6”, he participated in Exercise ENHANCED MOJAVE VIPER, several ROLLING THUNDER exercises, one Weapons and Tactics Instructor Course and took 1/10 to an INTEGRATED TRAINING EXERCISE, the first east coast firing battalion to participate in that event. During his tenure, the 1st Battalion grew from 600 to 1000 Marines with the closing of two of her sister battalions and subsequently became the largest artillery battalion in the Marine Corps with five firing batteries assigned to her flag.
Lieutenant Colonel Hallett gave up command in June 2013 and was accepted to Top Level School to attend the US Army's senior service college, the Advanced Strategic Leadership Seminar Program in Fort Leavenworth, Kansas. Upon graduation, he stayed an additional year in Fort Leavenworth as a Seminar Leader for the US Army's School of Advanced Military Studies.
In 2015, Lieutenant Colonel Hallett returned to Okinawa, Japan where he held numerous billets during that three year period to include the III Marine Expeditionary Force G35, Future Operations Officer; G37, Exercise & Training Officer and G39, Fires & Effects Coordinator. Additionally, he also deployed from Okinawa to Operation INHERENT RESOLVE to serve as the Combined Joint Forces Land Component Command J3 in Forward Operating Base Union, Baghdad.
Colonel Hallett returned from Iraq in the spring of 2018 to assume the role as Director, Experiment Division for the Marine Corps Warfighting Lab in MCB Quantico, Virginia until May of 2019. During that tour, he was selected for command of 10th Marine Regiment and subsequently assumed command of the regiment in June of 2019.
Colonel Hallett is married to the former Lee Rutherford of Spotsylvania, Virginia and has three children, Caeli Renee (22 years old), Robert Josiah (20) and Ainsley Bliss (13). His personal awards include the Legion of Merit, Defense Meritorious Service Medal with Oak Leaf Cluster, Meritorious Service Medal with two Gold Stars, Navy & Marine Corps Commendation Medal with Gold Star, and the Combat Action Ribbon.