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Iain Pedden

Iain Pedden

Chief Defense Counsel, U.S. Marine Corps

Colonel Iain Pedden currently serves as Chief Defense Counsel of the Marine Corps. His career experience includes trial and appellate litigation, academic instruction, constitutional advocacy, and service-level policy development within the military justice system.

Colonel Pedden’s recent litigation background includes serving as Director of the Appellate Government Division for the Navy and Marine Corps, where he led the representation of the United States in all criminal appeals within the Department of the Navy. He previously served as Chief Victims' Legal Counsel of the Marine Corps, Senior Defense Counsel, and Trial Counsel. His foundational appellate experience includes service as a clerk drafting briefs for the Illinois Attorney General’s Criminal Appeals Division in cases before the Illinois Supreme Court, the Seventh Circuit, and the United States Supreme Court. 

Apart from litigation assignments, Colonel Pedden served as Associate Professor of Criminal Law at the U.S. Army Judge Advocate General’s Legal Center and School, teaching evidence and constitutional law. He later served as Branch Head of Military Justice at Headquarters Marine Corps, advising senior leaders on federal legislation, implementing the Military Justice Act of 2016, and drafting policy on criminal justice data-sharing protocols with the FBI. His operational assignments include a combat deployment to Afghanistan and service as a Staff Judge Advocate (general counsel) to the 26th Marine Expeditionary Unit.  He went on to command Marines providing security at diplomatic facilities in Scandinavia, Western Europe and the Mediterranean.

Colonel Pedden holds an M.S. from the National War College, an LL.M. (International Law) from the U.S. Army JAG School, and a J.D. from Loyola University Chicago. He holds certifications as Victims’ Legal Counsel and military judge and is admitted to practice in Illinois and before the Navy-Marine Corps Court of Criminal Appeals and the U.S. Court of Appeals for the Armed Forces.

Colonel Pedden’s participation in programming, unless noted otherwise, is in his personal capacity. The views expressed are those of the speaker and do not necessarily represent the views of the Department of War, the Department of the Navy, the Marine Corps, or the U.S. Government.

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