Frederick Forsyth wrote an excellent book about the Ibo attempt to break free of the Nigerian state by kicking off the Biafran War.
https://en.wikipedia.org/wiki/The_Biafra_Story
He’s pretty good at reporting on the nitty gritty of how military campaigns are conducted. His best-selling thriller novels are, or course, better-known among the reading public.
One of my favorite authors. I have read a few of his novels though not the one you mentioned.