The Guns at Last Light

Rick Atkinson.  This third history book carries the story from D-Day to defeat of Germany.  It's thick, it's well written and reads nicely.  It is the story of the US Army in WWII.  Allies, air forces, navies, Soviets, war production, Ultra, etc you have to go somewhere else.  It covers all the side shows in the European theater that most histories ignore.  Here is the story of the second landing in France, the Colmar pocket, Market Garden, and the Huertzgen Forest.  Now that all the participants are safely dead, it is possible to explore the political wrangling that was kept quiet for so long.  As Atkinson tells it, Montgomery spent the war being insufferable, and Eisenhower spent the war suffering him in the interests of keeping the Allies allied.  Also impressive is the sheer size of the war effort.  The number of men sent into combat and the mountains of materiel (stuff) produced and shipped overseas to sustain the massive forces in the field is incredible even by the standards of 70 years later.   It's a good read, right up there with Samuel Elliot Morison. 
   An Army and Dawn and Day of Battle, Atkinson's  first two books are also good.