Sylvestre Mudacumura is the overall commander of the military wing of the rebel Democratic Forces for the Liberation of Rwanda (FDLR), known as the Forces Combattants Abacunguzi (FOCA). He was the deputy commander of the Presidential Guard of the Rwandan Armed Forces during the 1994 genocide. Described as being age 55 in 2009, prior to the genocide he attended "the leadership academy of the armed forces in Hamburg" on a two year scholarship. (This institution appears almost certainly to have been the Führungsakademie der Bundeswehr.) Following the genocide, it is believed Mudacumura's wife and children were moved to Germany with the help of FDLR political leader Ignace Murwanashyaka.
Mudacumura is an FDLR 'westerner', belonging to the group of rebels who were previously based in Kamina and fought alongside the Forces Armées Congolaise, as opposed to the group that stayed in the Kivus. Since 2003, there has been tension within the FDLR as Mudacumura has replaced 'easterners' with 'westerners' in the command structure. He is implicated in the December 2006 death of the former FOCA second in command, Colonel Jean Baptist Kanyandekwe, who died of poisoning at a party thrown by the FOCA head. Kanyandekwe is said to have led a faction advocating for the end of hostilities and the return of the rebels to Rwanda.
Human Rights Watch said in December 2009,
According to former FDLR combatants interviewed by Human Rights Watch and others, General Mudacumura has clear and immediate command responsibility over FDLR forces. "It is Mudacumura who gives all the overall instructions and commands, and others follow his orders... No operation could ever be done without his consent," one former FDLR combatant told Human Rights Watch. In another case, a senior FDLR deserter from the Reserve Brigade told UN officials that Lt. Col. Félicien Nzabanita, commander of the Reserve Brigade, which conducted several of the larger attacks on civilians during Umoja Wetu and Kimia II, "never made any decisions unless they were coming from Mudacumura."
It is unclear if Mudacumura or Murwanashyaka has more power in the organization, with at least one FOCA colonel reporting that Murwanashyaka reported to Mudacumura during a visit. Mudacumura's younger brother, known as "Big Patrick", has a relationship with the Indian Battalion of MONUC. Big Patrick was also rumored to have used his contacts with MONUC to provide expatriate medical care to Mudacumura in November 2009. Mudacumura's brother-in-law, Lt. Col. Edmond Ngarambe, was the FOCA spokesperson prior to being captured in Operation Umoja Wetu.
Sanctions and criminal charges
The prosecutor of the International Criminal Court sought an arrest warrant against him, alleging responsibility for crimes against humanity and war crimes committed in 2009-10 in the Kivus.  The warrant was issued on 13 July 2012.
- Romkena, Hans; De Vennhoop (June 2007). "Opportunities and Constraints for the Disarmament and Repatriation of Foreign Armed Groups in the Democratic Republic of the Congo: The cases of the: FDLR, FNL and ADF/NALU". Unknown parameter
|note=ignored (help), p. 45
- Karuhanga, James; agencies (20 November 2009). "Rwanda: Fate of FDLR Chiefs to Be Known in Three Months". The New Times. Retrieved 10 January 2010.
- Romkena, p. 59
- Munyaneza, James (3 January 2007). "Tension engulfs FDLR over Colonel’s death". The New Times. Retrieved 10 January 2010.[dead link]
- ""You Will Be Punished"". Human Rights Watch. 13 December 2009. Retrieved 14 December 2009.
- Romkena, p. 49
- Romkena, pp. 52 & 93
- Karuhanga, James (6 November 2009). "Monuc Comes to the Aid of FDLR Commander". The New Times. Retrieved 10 January 2010.
- "Treasury Designates Five Individuals for Contributing to the Conflict in the Democratic Republic of the Congo". United States Department of the Treasury. March 4, 2009. Retrieved 10 January 2010.
- ICC Seeks to Arrest Ntaganda, Mudacumura for DRC Crimes, Voice of America, 14 May 2012
- "ICC-01/04-01/12-1-Red: Decision on the Prosecutor's Application under Article 58" (PDF). International Criminal Court. 2012-07-13. Retrieved 2012-07-13.