I highly recommend Correlli Barnett's book Desert Generals for the high-level story about what happened in the war in North Africa from 1940 to 1943. He tells the story from the perspective of the British generals involved in the war, and their interactions with Churchill. Churchill's favorite was General Sir Claude Auchinleck ("The Auk"). He had been appointed theater commander after Churchill lost confidence in General Wavell. Auchinleck seems to not have been a good judge of men, although being a man of quality, himself. Finally, for political reasons, and Churchill decided he needed to replace Auchinleck, who had become field commander and theater commander. Harold Alexander took over the theater commander position while the ever controversial Bernard Law Montgomery became field commander. I want to write about the men in more detail, over time.