Is Nga Atsessé a spiritual phenomenon? Is it an organization of peoples in the Alima-Nkéni basin for their freedom and peace?In this solid, in-depth study, Joseph ITOUA reveals the Nga Atsessé man, his territory, his traditional political works and his strategies for warfare without appropriate weapons.The author also reveals the colonizers' strategies in this unjust and disproportionate war. Professor Joseph ITOUA's study reveals to the reader the causes of the war and of the failure of Nga Atsessé and the peoples of the Alima-Nkéni basin to resist the French occupiers.