Acting Secretary of Defense Christopher C. Miller

Acting Secretary of Defense Christopher C. Miller
Name	Christopher C. Miller
Office	Acting United States Secretary of Defense
President	Donald Trump
Term start	November 9, 2020
Term end	January 20, 2021
Predecessor	Mark Esper
Successor	Lloyd Austin
Birth date	15 October 1965
Birth place	Bellows Falls, Vermont
Education	Lynchburg College (BA), United States Army Command and General Staff College (MS)
Rank	United States Army Colonel (United States)
Serviceyears	1983–2014

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Acting Secretary of Defense Christopher C. Miller

Christopher C. Miller is an American former United States Army officer, intelligence official, and civil servant who served as Acting United States Secretary of Defense from November 9, 2020, to January 20, 2021, under Donald Trump. A graduate of Lynchburg College and the United States Army Command and General Staff College, he held senior positions in United States Special Operations Command, the Office of the Secretary of Defense, and the National Counterterrorism Center. Miller's tenure as Acting Secretary encompassed the final months of the Trump administration and included major decisions on force posture, counterterrorism operations, and the withdrawal of United States Armed Forces from Afghanistan and other regions.

Early life and education

Born in Bellows Falls, Vermont, Miller attended Lynchburg College where he earned a Bachelor of Arts degree. He later completed graduate-level professional military education at the United States Army Command and General Staff College and undertook advanced studies affiliated with Joint Special Operations University and the Joint Staff educational framework. His early formation included assignments linked to Southwest Asia deployments and professional development connected to the Reserve Officers' Training Corps pathways and United States Army Special Operations Command preparation.

Miller commissioned into the United States Army in the mid-1980s and rose to the rank of Colonel (United States). His operational résumé includes multiple battalion and staff roles within Special Forces, 82nd Airborne Division-associated units, and elements that supported Operation Enduring Freedom and Operation Iraqi Freedom. He served in leadership positions across theater-level staffs in United States Central Command and on joint task forces associated with counterinsurgency and counterterrorism efforts. Miller completed tours with units integrated into Joint Special Operations Command taskings and contributed to planning that interfaced with the Defense Intelligence Agency, Central Intelligence Agency, and the National Security Council staff. He retired from active duty in 2014 after nearly three decades of service.

Following retirement, Miller transitioned into senior civilian roles including deputy directorship and then directorship within the National Counterterrorism Center, where he worked alongside officials from the Federal Bureau of Investigation, Department of State, and Department of Homeland Security on interagency counterterrorism policy. He served in the Office of the Secretary of Defense under Secretaries who worked with the United States Congress on authorizations for use of military force and defense budget measures tied to the National Defense Authorization Act. Miller also held senior positions at Abbott Laboratories-linked defense contracting advisory groups and provided consultancy that interfaced with United States Special Operations Command and the Defense Intelligence Agency on capability development and force modernization initiatives.

Appointed Acting United States Secretary of Defense following the dismissal of Mark Esper, Miller led the Department of Defense during the transition between the Trump administration and the incoming Biden administration. He oversaw significant actions including revisions to force drawdown timelines from Afghanistan and adjustments to troop levels in Iraq and Syria that implicated agreements with the Taliban and coalition partners such as NATO and the United Kingdom. Miller authorized counterterrorism operations and strike activities coordinated with the Central Intelligence Agency and United States Special Operations Command, and he managed National Defense priorities in concert with the Joint Chiefs of Staff, including Chairman of the Joint Chiefs of Staff interactions and senior military leadership consultations. His administration engaged with congressional leaders over transition protocols and the disposition of defense resources amid contested political developments following the 2020 United States presidential election.

Miller's time as Acting Secretary drew scrutiny from members of United States Congress, media outlets, and former military officials on several fronts: the timing and scope of the withdrawal from Afghanistan in light of the Taliban–United States peace deal; post-election orders associated with January 6, 2021, events at the United States Capitol that involved coordination with the Department of Homeland Security and the United States National Guard; and decisions about senior defense personnel changes that affected relationships with the Joint Chiefs of Staff. Critics cited concerns raised in hearings before the Senate Armed Services Committee and the House Armed Services Committee about adherence to statutory norms such as the Insurrection Act thresholds and standard succession practices under the Federal Vacancies Reform Act and the National Defense Authorization Act protocols.

Miller has been recognized with military decorations earned over his career that include awards administered by the Department of Defense and unit-level recognitions tied to operational deployments. He is associated with veterans' organizations and professional networks that include the Association of the United States Army and Special Operations Association. Residing in the Washington, D.C. area during his civilian service, his personal biography intersects with civic engagements and participation in symposiums hosted by institutions such as the Center for Strategic and International Studies and the Atlantic Council.