Brigadier General Chiarotti was commissioned December 21, 1985 upon graduation from Westminster College, Salt Lake City, Utah. In December 1986, following graduation from The Basic School and Basic Motor Transport Officer Course, he was assigned to 1st Low Altitude Air Defense Battalion, Marine Air Control Group 18, Okinawa, Japan. During this tour, he served as the Battalion MTO, S-4 Officer, and 2d Platoon Commander, Bravo Battery (Stinger Gunner). In May 1989, he was assigned to Headquarters and Service Battalion, Marine Corps Recruit Depot, San Diego, California and served as Operations Officer, Assistant Chief of Staff G-4, and Depot Motor Transport Officer. In June 1992, Captain Chiarotti was selected to attend the Amphibious Warfare School, Quantico, Virginia. Upon graduation, he was assigned to Camp Pendleton, California for duty with 7th Motor Transport Battalion, 1st Force Service Support Group. While with 7th Motors, he commanded both Alpha and Headquarters and Service Company. Additionally, he served as Operations Officer, Combat Service Support Detachment 17. Transferred to MEU Service Support Group 15, he was assigned as the Operations Officer and subsequently deployed with the 15th MEU (SOC). He deployed in support of WestPac in 1995.
Upon his return from deployment in 1996, he was assigned to Combat Service Support Detachment (CSSD) 36, Iwakuni, Japan, for duties as Executive Officer. Throughout his tour with CSSD 36, he participated in numerous deployments to the Republic of Korea and other WestPac destinations. In June 1999, he was selected to attend the Naval Command and Staff College, Newport, Rhode Island. Following graduation in June 2000, Major Chiarotti was assigned to Marine Forces Europe, Stuttgart, Germany as the Southern Region Logistics Plans Officer. During his tenure, he deployed numerous times in support of Operation Northern Watch, Incirlik, Turkey and other RSO&I events throughout Southern Europe. In August 2001, Major Chiarotti reported for duty as Plans Officer, Plans and Policy Division, Logistics and Security Directorate, Headquarters, US European Command. Following the events of September 11, 2001, he was served as Watch Officer , Crisis Action Team, European Theater Command and Control Center. Subsequently, he served as the Branch Chief, Logistics Support Operation, , where he was responsible for the planning and execution of logistics support operations in support of Operation Enduring Freedom and Operation Iraqi Freedom from within the European area of responsibility. From February to April 2003, he served as the Logistics Chief, Multi-national Joint Logistics Support Center, Incirlik, Turkey in support of logistics operations in Northern Iraq.
In May 2003, Lieutenant Colonel Chiarotti was assigned to 2d Force Service Support Group. In July 2003, he deployed as the Officer in Charge, Transport Support Detachment, Special Purpose Marine Air Ground Task Force, Camp Fox, Kuwait. Returning in November 2003, he assumed duties as Deputy, Assistant Chief of Staff G-3. In March 2004, he deployed in support of OPERATION SECURE TOMORROW as the Director for Logistics, Combined Joint Task Force, Haiti.
Returning from Haiti in July 2004, he assumed command of MEU Service Support Group (MSSG) 22 and was deployed in support of Revised Combined Arms Exercise 3-14, Camp Wilson, Twenty-nine Palms, California from September 2004 to March 2005. In May of 2005, MSSG-22 became part of 22d MEU (SOC).
Lieutenant Colonel Chiarotti deployed MSSG-22 in support of OPERATION IRAQI FREEDOM along with the 22d MEU (SOC) from November 2005 to May 2006. Lieutenant Colonel relinquished command of MSSG-22 on 9 June 2006. He was selected for and successfully completed a Fellowship at Smeal School of Business, Pennsylvania State University, State College, Pennsylvania, and was subsequently transferred to Okinawa, Japan on 7 July 2007, where he assumed command of Combat Logistics Regiment (CLR 3), 3d Marine Logistics G, III MEF.
He relinquished command on 10 July, 2009 and became Assistant Chief of Staff, G-3 until his assignment as Chief of Staff, Logistics Directorate, United States Central Command, Tampa, Florida.