There will be a number of themed activities and commemorative events throughout the day, and HRH The Princess Royal will be in attendance.
At 10.50am the Royal Gloucestershire Hussars, with soldiers dressed in WW1 uniform, will march in contingent in the parade ring. At 11am, the Cheltenham Steam Train will arrive with a contingent of Glosters on board, followed by an Act of Remembrance in the parade ring at 11.15am.
At 12.30pm there will be an Aerial Combat Display above the racecourse, followed by a parade on the course at 1.30pm.
There will be a host of WW1-themed activities and displays inside The Centaur, including a field hospital, a Jet Age museum, a display illustrating the racing communities' contribution to WW1, examples of modern infantry equipment, exhibitions dedicated to war poetry and a half-scale reproduction Sopwith Camel.
The charity for the day is Combat Stress, the UK's leading charity for veteran's mental health. Combat Stress, which provides support to veterans from every service and every conflict, has helped former servicemen and women deal with trauma-related mental health problems such as anxiety, depression and post-traumatic stress disorder for nearly a century.