Lieutenant Colonel Schuller served as an artillery officer before becoming a judge advocate. He has performed duties as a prosecutor, defense counsel, and company commander. LtCol Schuller served as the Staff Judge Advocate (SJA), 3d Marine Aircraft Wing (Forward) while deployed to Afghanistan in 2010. He deployed in 2013 as the SJA for Special Purpose Marine Air-Ground Task Force – Crisis Response in support of operations in U.S. Africa Command. He deployed again in 2014 as SJA of the 24th Marine Expeditionary Unit and supported operations in U.S. Central Command. LtCol Schuller served as Associate Director of the Stockton Center for the Study of International Law at the U.S. Naval War College and then as the Deputy SJA for U.S. European Command, where he deployed in support of cross-combatant command operations. He currently serves as the SJA for Marine Corps Training Command in Quantico, Virginia.

LtCol Schuller is a Fellow at the Center on National Security and the Law at Georgetown University Law Center. His publications include Inimical Inceptions of Imminence: A New Approach to Anticipatory Self-Defense Under the Law of Armed Conflict, in the UCLA Journal of International Law and Foreign Affairs, and At the Crossroads of Control: The Intersection of Artificial Intelligence in Autonomous Weapon Systems with International Humanitarian Law in Harvard Law School’s National Security Journal. His most recent publication is Artificial Intelligence Effecting Human Decisions to Kill: The Challenge of Linking Numerically Quantifiable Goals to IHL Compliance in the Ohio State Technology Law Journal.