Austin Bay recommends a book first published in 1963 as still being the best single-volume history of the Korean War (and I agree):

June 25 marked the 60th anniversary of North Korea’s premeditated attack on South Korea. The attack, which scattered South Korea’s weak and disorganized defense forces, began a vicious two and a half months of combat. The North Koreans would smash the ill-starred U.S. 24th Division’s Task Force Smith, then shove remnant South Korean troops and U.S. reinforcements into the Pusan Perimeter, at the southern tip of the peninsula.

In the weeks since June 25, I’ve re-read T.R. Fehrenbach’s “This Kind of War,” still the premier Korean War history. (Clay Blair’s “The Forgotten War” is also an excellent book.) Published in 1963 and reissued in 2000, “This Kind of War” is lyric history, delivering analysis in elegant, honest prose. Fehrenbach is also a decorated Korean War veteran, a man in touch with the emotions as well as the facts.

“This kind of war,” Fehrenbach writes, “is dirty business first to last.” Fehrenbach’s commentary on those first battles of July and August 1950 depicts the confusion of initial defeat and retreat, as well as the courage and intellect required to stem the onslaught. His chapter on the Inchon landing of September 1950 — the American amphibious counter-stroke — is incisive. Its 60th anniversary is two weeks away.

I think I first saw This Kind of War recommended by Jim Dunnigan, many years ago, but the Korean War has never been a major historical interest of mine. When I did get around to reading the book, it certainly opened my eyes. As Bay points out, the work is still topical because the war has never officially ended (as the sinking of the ROKS Cheonan amply demonstrated).