Roman riding is one of the older forms of riding, and was performed during the time of the Roman Empire. As many as five horses, with the rider standing on the inner three, have been ridden and jumped abreast. As many as nine horses, three teams of three abreast, have been ridden and jumped in tandem. Tricks such as trading teams while riding, riding a pony team between the horse team and jumping six- and nine-horse tandems are also performed. Sometimes riders will change teams at the trot, dance, ride backward and twirl a baton, and even jump through fire.