Brigadier Alfred Claude Nelson-Williams (SL 215) of the Republic of Sierra Leone Armed Forces (RSLAF) is a Sierra Leonean army officer and Chief of Defense Staff (CDS) for Sierra Leone from 2008 to 2010. Nelson-Williams holds degrees from Junior and Senior Command and Staff Colleges in Ghana, as a Fellow of the Nigeria War College, in Management and Public Administration at the University of Ghana at Legon, and as a Master of Science at the University of Ibadan in Nigeria. His honours and awards include an ECOMOG Medal as well as long service, efficiency and gallantry medals. He also earned a National Award as Grand Officer of the Order of Rokel.
Nelson-Williams entered into the Republic of Sierra Leone Armed Forces in 1975 as an enlisted serviceman, then became commissioned as a regular combatant officer after completing an officer cadet training program in the Egyptian Military Academy in April 1978. Between 1978 and 1980 he continued to rise in the ranks, serving as a platoon commander and then as a mechanical and transport officer (MTO) in the second battalion, Republic of Sierra Leone Regiment (2RSLAR). In 1983, he was tasked to head the anti-smuggling squad while serving in the First Battalion, Republic of Sierra Leone Regiment (1RSLAR). After distinguishing himself in this service by arresting the organizers of an $11.5 M diamond racket in Kono despite being offered a bribe of $100 K and a brand new Mercedes-Benz, Nelson-Williams moved up to the position of adjutant of the 1RSLAR in 1984, preparing him for further roles in military administration. In 1985 he completed a junior division command and staff course in Ghana Armed Forces Command and Staff College, and in 1986, he was appointed to head an anti-corruption squad. He returned to the adjutant post after this appointment, holding it from 1987 to 1990.
After serving this stint as adjutant, in 1991 Nelson-Williams was chosen to serve among the troops Sierra Leone contributed to the Economic Community of West African States Monitoring Group (ECOMOG) peace enforcement operations deployed by the Economic Community of West African States (ECOWAS) to the First Liberian Civil War. Nelson-Williams was initially appointed deputy chief military intelligence officer at ECOWAS headquarters, but was recalled to Sierra Leone. After this recall, he rejoined the ECOMOG force in several positions, distinguishing himself in particular at the Bo waterside by being the first officer to capture the Mano River Union Bridge, a major objective. After a brief return to Sierra Leone to serve as military assistant to the National Security Adviser in 1992, he returned to Liberia, where he was appointed contingent commander and commanding officer of the Sierra Leone contingent. For his distinguished and meritorious tour, he has been awarded a medal for his participation in ECOMOG (1992), a Gallantry Medal (1993) and a Long Service and Efficiency Medal (1994).