Buzzard graduated from the U.S. Military Academy in 1992 and was commissioned as a
second lieutenant, serving in the
504th Parachute Infantry Regiment,
82nd Airborne Division, as a
rifle platoon leader. He went on to serve in numerous command roles as
company leader within several different units, including the 1st Battalion, 504th Infantry Regiment; from 1993 in the 2nd Squadron,
11th Armored Cavalry Regiment, and from 1997 in the
3rd Infantry Regiment (The Old Guard). From 1999 he attended the John F. Kennedy School of Government, On 4 October 2019, Buzzard was promoted to
brigadier general. After the
2021 US withdrawal from Afghanistan, Buzzard will lead the
Defense Security Cooperation Management Office Afghanistan in
Qatar. He will administer funding and over-the-horizon aircraft maintenance support for the
Afghan National Defense and Security Forces, also supporting the newly-formed US Forces Afghanistan Forward, in charge of American troops in Afghanistan. He assumed command in late July. In July 2021, Buzzard was nominated for promotion to major general. In July 2024, Buzzard was nominated for promotion to lieutenant general and assignment as commander of
Security Assistance Group–Ukraine. He assumed the additional command of
NATO Security Assistance and Training for Ukraine,
Operation Atlantic Resolve, in December 2024. In November 2025 he was part of a delegation led by U.S. Army Secretary
Daniel P. Driscoll to Ukraine for
peace negotiations in the Russo-Ukrainian war. ==Personal life==