1. A line of people, walking, on horses, or in vehicles, who are moving slowly as part of a ceremony.
2. A number of important people, things, or events appearing or happening in a short space of time.
“Cavalcade” originally referred to a horseback procession, and shares the same Latin root as “cavalier.” Throughout the years its meaning expanded to include people on foot or riding other forms of conveyance, as well. “The “cade” ending eventually spun off into words like “motorcade.”
There’s nothing wrong with describing a procession of knights and carriages as such, but it’s definitely worth knowing, as a writer, that you can simply employ “cavalcade” instead.
One day, as Claus sat before his door to enjoy the sunshine while he busily carved the head and horns of a toy deer, he looked up and discovered a glittering cavalcade of horsemen approaching through the Valley.
When they drew nearer he saw that the band consisted of a score of men-at-arms, clad in bright armor and bearing in their hands spears and battle-axes.
– L. Frank Baum, The Life and Adventures of Santa Claus (1902)