Major General Richard Opoku-Adusei was born on 24 November 1954 at Bekwai in the Ashanti Region. He attended Techiman Secondary School where he obtained his General Certificates of Education Ordinary Level in 1974. He continued to the Seventh-Day Adventist Secondary School Bekwai-Ashanti and obtained his General Certificate of Education Advanced Level in 1976.
Maj Gen Opoku-Adusei enlisted into the Ghana Military Academy and was commissioned on 28 August 1978. He holds a Master of Science Degree in Strategic Studies awarded by the University of Ibadan, Nigeria. He has also just concluded a Master of Arts in International Affairs and Diplomacy degree course at the Legon Centre for International Affairs and Diplomacy, University of Ghana. He obtained a Post-Graduate Diploma in Public Administration from GIMPA in 2004 and another Graduate Diploma in Management Studies from the Institute of Commercial Management in Bournemouth, UK.
In the bid to expand his academic and professional horizon in his chosen career, he has attended many courses some of which include: Basic Parachutist and Winter Warfare Course in Canada (January – August 1978), Public and Non-Public Funds Course at the Forces Pay Office (1982), Junior Staff Course at the Ghana Armed Forces Command and Staff College (April 1990), Senior Staff Course at the Command and Staff College, Jaji-Kaduna, Nigeria (August 1992), Standard Training Module 3 Workshop in Budapest, Hungary (September 2004) and Nigeria War College, Abuja (2006).
Maj Gen Opoku-Adusei, during the course of his career has held various Command and Staff appointments. He was Platoon Commander, Border Guards Headquarters, Accra (August 1978 – December 1981), Officer Commanding, 3 Border Guards Battalion (August 1981 – December 1984), and Company Commander, Airborne Force, Tamale (November 1985 – December 1986). He also served as the Officer Commanding Trial and Development Wing, Jungle Warfare School, Akim Achiase (March 1988 – May 1989), Commandant, Customs Excise and Preventive Service (CEPS) Training School, Kpetoe (May 1990 – January 1991) and General Staff Officer Gd II at the HQ Support Services Brigade Group (1992 - 1993).
He was also the Tactical Instructor, Army Combat Training School at the Military Academy and Training Schools (September – August 1996), Deputy Director Army Intelligence and Plans, Army Headquarter, Directing Staff at the Junior Division and later the Senior Division, both at the Ghana Armed Forces Command and Staff College (GAFCSC) as well as Commanding Officer 3 Infantry Battalion.