Matterhorn : a Novel of the Vietnam War by Karl Marlantes has found a place on many a bestseller list, along side rave reviews. The novel is set in Quang-Tri province, site of many of the war's fiercest battles. The author is a highly decorated Vietnam veteran, Yale graduate, and Rhodes scholar.
In Daring Young Men : the Heroism and Triumph of the Berlin Airlift, June 1948-May 1949, author Richard Reeves details the harrowing journey of two men who risked their lives to defy the Soviet blockade intended to drive Western powers out of Berlin.
Alternate history (what-if) novels can sometimes be chancy; this one is particularly good. Robert Conroy's Red Inferno, 1945 speculates on what might have happened after Yalta, if Allied armies had moved to stop Stalin's grab for much of Europe. Very scary take but plausible.