Dark of the Sun

Dark of the Sun by Smith, Wilbur A.. mass_market edition. ISBN: 9780440116677.

Bruce Curry is the leader of a mercenary band with the dubious support of three white officers. His mission is to relieve a mining town cut off by the fighting and to retrieve a priceless consignment of diamonds. Ranged against his ill-disciplined unit are bandits, guerillas and hostile tribes that infest the land. But there is another, even deadlier enemy - one of his own men...The pace would do credit to a Porsche, and the invention is as bright and explosive as a fireworks display - "Sunday Telegraph".