MacKenzie wrote many notable Hollywood films, including: The Private Lives of Elizabeth and Essex (1939), They Died with Their Boots On (1941), Ivanhoe (1952), and The Ten Commandments (1956).
He takes command of the Michigan Brigade at the Battle of Gettysburg, wins the day, and many victories follow him all the way to Appomattox.
Boots UK | Puss in Boots | These Boots Are Made for Walkin' | The Day the Music Died | Justin Boots | Boots Malone | Thomas Paget (died 1741) | They Died with Their Boots On | The Dog It Was That Died | Puss in Boots (2011 film) | Nude with Boots | Kirkman Finlay (died 1828) | Kinky Boots | John Pakington (died 1625) | Girl in Gold Boots | Boots and Saddles | Alliance Boots | Wulfstan (died 956) | William More (died 1600) | Ugg boots | Tony Lama Boots | The Woman Who Died a Lot | The Night Paddy Murphy Died | The Night Gwen Stacy Died | The Last Camel Died at Noon | The Day The Music Died | Sidney Weintraub (economist born 1914 died 1983) | Richard Lee (died 1608) | Richard Bulkeley (died 1573) | Richard Berkeley (died 1604) |
He created an eight-page adaptation of General George Armstrong Custer's last stand based primarily on his hazy memory of the film They Died With Their Boots On.
In 1978, he toured Europe, and while there he collaborated on the soundtrack of the Italian spaghetti western Sella d'Argento (Silver Saddle/They Died with Their Boots On), directed by Lucio Fulci.