Warren Fensom currently works for the United Nations of Drugs and Crime (UNODC) as a Maritime Crimes Advisor to the Federal Ministry of Justice of Nigeria in Abuja.
After a 15-year career as a civil trial lawyer in British Columbia, Warren served as a civilian lawyer at the Canadian Armed Forces (CAF) Office of the Senior Legal Advisor Europe in Lahr, Germany from 1992 to 1994, and, the following year, as Editor in Chief of legal publication at The New Brunswick Case Digests.
After joining the CAF in 1997 and its Directorate of Training in Ottawa, Warren was part of the three-person team that wrote the doctrinal manuals of The Law of Armed Conflict (LOAC) at the Operational and Tactical Levels and The Code of Conduct for Canadian Forces (CF) Personnel, and assisted in the redevelopment and the delivery of LOAC courses across the country. In 1999, he deployed to Sarajevo (SFOR NATO Headquarters), participating in the arrest of persons indicted for war crimes and accompanying their transfer to the International Criminal Court in Den Hague. He was appointed the Theatre Senior Claims Officer responsible for all Military Tribunal Claims courts in Sarajevo under the Dayton Agreement, including running the trial and appeal levels for 17 nations.
During his posting as Deputy Judge Advocate in CBF Petawawa from 1999 to 2002, he deployed to Kandahar, Afghanistan in 2002. Upon his return at the Directorate of Training, Warren became responsible for the development of LOAC Training for the CAF, and was the lead officer for many LOAC courses delivered across Canada and abroad from 2002 to 2005. In 2004, he did a short deployment to Afghanistan; this time as legal advisor to NATO Commander in Chief, ISAF Headquarters in Kabul.
In 2006, Warren served as Legal Advisor to Administrative Support Investigation Centre (ASIC) in Ottawa, before becoming Deputy Judge Advocate at Esquimalt, BC in 2007 until 2011. In 2009, he took part in the Royal Canadian Navy’s first NATO Mission for Counter Piracy aboard HMCS Winnipeg, providing legal advice concerning the law of piracy and the use of force including advice to the Commander while on the bridge during active encounters with pirates. In 2010-2011, Warren was Deputy Chief and then Chief of Afghan National Army (ANA) Legal Training at ANA Military Legal School, Kabul Military Training Centre. This school, which was started from a concept to a functioning law school, was considered by NATO Command as a milestone success story. Warren received the Deployed Legal Officer of the Year Award from CAF Office of the Judge Advocate General in 2011.