There are only a handful of war movies and/or historical films that portray the men that fight battles realistically, and two of them — both "starring" Theodore Roosevelt (The Wind and the Lion and Rough Riders) — are by John Milius. "Rough Riders" is an unforgettable film on the events of the Spanish-American War and it is too bad that more movies cannot be like this or like films such as Zulu, Gettysburg, or The Longest Day.
In this brilliant outtake that shows the pathos of the departure to the front, the troops of Teddy Roosevelt's (Tom Berenger's) 1st United States Volunteer Cavalry fall in under the orders of Captain Bucky O'Neill (Sam Elliott) for the train ride east across the South to Florida (for embarkation to Cuba), discovering in the process that the wounds of the Civil War (or the War Between the States, to make everybody happy) have started to heal, all to the tune of Garryowen, stunningly sung by Elan Oberon (who happens to be Milius' wife).
If there are DVDs that all Americans (hell, that all people everywhere) should own, this is one of them — don't miss other outstanding portrayals, notably Marshall Teague as Black Jack Pershing and Gary Busey, utterly outstanding in the role of Fighting Joe Wheeler.
(Thanks to Hervé for all his work in creating this video)