World War II in HD is a History Channel television series that chronicles the hardships of World War II, using rare films shot in color never seen on television before. The episodes premiered on five consecutive days in mid-November 2009, with two episodes per day. The series is narrated by Gary Sinise and was produced by Lou Reda Productions in Easton, Pennsylvania.

Gary Alan Sinise is an American actor of stage and screen, as well as a director, producer, musician, and humanitarian. Among other awards, he has won a Primetime Emmy Award, a Golden Globe Award, a Tony Award, and four Screen Actors Guild Awards. He has also received a star on the Hollywood Walk of Fame, and he has been nominated for an Academy Award. Sinise has also received numerous awards and honors for his extensive humanitarian work and involvement with charitable organizations. He is a supporter of various veterans' organizations and founded the Lt. Dan Band, which plays at military bases around the world.