Many years ago I read his book “My Command”. It is about the civil war in Nigeria, Biafra tried to set up an independent state. Obasanjo was a high military commander of the federal army. In this book he tells his story about his command.
In later years he became president of Nigeria and a senior statesman in Africa. He now has published his memoires “My Watch”, in three volumes. The book has been banned in Nigeria, for the time being. But when you want to have a look at this book you just have to turn to the bookseller Amazon (but if you live outside Nigeria) just go to your local bookseller and have a try there.