Lieutenant General Arnold Quainoo, a Ghanaian retired military officer, held the position of Chief of Defence Staff of the Ghana Armed Forces from August 1983 to September 1989. He succeeded Flight Lieutenant J.J. Rawlings and transferred his duties to Lieutenant General Winston Mensa-Wood. Additionally, Quainoo served as the inaugural commander of the Economic Community of West African States Monitoring Group (ECOMOG), leading interventions in Liberia to aid in the resolution of the civil war.

During his illustrious career, Quainoo also served as Army Commander on two occasions. Initially appointed in 1979 after the coup d'état by the Armed Forces Revolutionary Council, he was replaced upon the election of the Limann government. However, he was subsequently reinstated as Chief of Army Staff following the coup by the Provisional National Defence Council, later assuming the role of General Officer Commanding the Ghana Armed Forces.

In 2014, Quainoo refuted any involvement in the death of Liberian President Samuel Doe.

Reference:

https://en.wikipedia.org/wiki/Arnold_Quainoo