George S. Patton spent a lifetime with horses. He played polo, fox-hunted, and competed in mounted steeplechases. He was a participant in the first modern pentathlon at the 1912 Olympics in Stockholm, Sweden, placing sixth out of 23 in the equestrian phase.
The red uniform that is used at the end of the movie is not original. The Spanish Riding school never used a red uniform. Disney found the original brown uniform too simple for a gala opening and introduced these uniforms.
General George S. Patton wrote that a cavalry leader "must have a passion-not simply a liking-for horses.
The "St. Martin" location where they kept the stallions after the evacuation was at Hermesvilla, a palace in the Lainzer Tiergarten, in Vienna, a former hunting area for the Habsburg nobility. During the post-WWII Russian occupation of Vienna from 1945-1955, the Villa was looted by the Soviets, became run down and remained in poor condition for a number of years. However, in 1963, this movie brought back the interest in the building. This led to a private initiative that motivated the Austrian authorities to renovate the Villa, and the renovation process lasted from 1968 until 1974.
Alois Podhajsky: can be seen in the end gala performance, first just screen right of Robert Taylor, then just screen left.