1. Robert Citino's The Death of the Wehrmacht, 1942. Nearly done--simply first-rate. I really understand now, for the first time, the full breakdown of German logistics from Operation Blue onward to Stalingrad and into the Caucasus. Can't wait for his new release The Wehrmacht Retreats: Fighting a Lost War, 1943, which I just ordered.
2. Brian Holden Reid's America's Civil War: The Operational Battlefield, 1861-1863. This is an interesting book, generally well done, but it is not keeping me up at night like Harsh's Taken at the Flood or Freeman's Lee's Lieutenants.
3. Stephen Fritz' Ostkrieg: Hitler's War of Extermination in the East. Another "could have had a V-8" slap on the forehead epiphanies. An outstanding synthesis of existing research brilliantly written. The scope and breadth of this aspect of WWII, where 4 out of every 5 Germans who died in the war perished, is required reading for anyone with even a passing interest in this topic.
So . . . what are you reading?