[1] When a group of junior military officers in the Sierra Leone Army led by Captain Valentine Strasser seized power in a military coup in April 1992 and overthrew then Sierra Leone's president Joseph Saidu Momoh, Colonel K.M.S.

He obtained his Bachelor degree in Law at Fourah Bay College, and enlisted in the Sierra Leone Army as a cadet officer.

Dumbuya was born in the village of Mayafen in Tonko Limba Chiefdom, Kambia District in the Northern Province of Sierra Leone.

He was later transferred to the Taima Primary School for being one of the most brilliant students Tonko Limba Chiefdom and Kambia District as a whole.

He attended secondary school in the capital Freetown where he easily passed his GCE-O'Levels exam and was accepted at the Fourah Bay College, the oldest university in West Africa.

He obtained his Bachelor degree in Law at Fourah Bay College, and enlisted in the Sierra Leone Army as a cadet officer.