Three-day eventing, or Horse Trials, provides a comprehensive test of all round ability for horse and rider and tests the partnership between the two. The sport evolved from the requirements for a top class military charger – steadiness and elegance on parade, the ability to gallop across country in battle, and then to continue with duties after a strenuous day. These requirements have transformed in to the three modern phases of the sport – Dressage, Cross-Country and Show Jumping. In order to succeed, riders and their horses must be highly skilled in all three disciplines.