This Week on History Happy Hour: On D-Day, the second Ranger Battalion under Colonel James Rudder took the German Battery at Pointe Du Hoc. Following that, they took part in the bloody assault on Brest with the 29th Division. Then, in December 1944, came their biggest test: Hill 400 in the Hurtgen Forest.

We'll take up that story with Bob Drury, co-author of The Last Hill: The Epic Story of a Ranger Battalion and the Battle that Defined WWII.

Bob Drury, the recipient of several national journalism awards, is a three-time National Magazine Award finalist as well as a Pulitzer Prize nominee. Drury honed his investigative skills writing for all four New York City newspapers as well as a variety of national publications. His journalism career has arced from sports to crime to adventure travel to foreign correspondence. He is also the author, co-author, or editor of ten non-fiction books, including Valley Forge and Lucky 666.