Tent pegging with a lance, lemon cutting with the sword and wrestling on horseback were popular sports competitions at the annual camps. The link for wrestling on horseback will take you to a short YouTube clip which is the only footage I have seen of the King Edward's Horse. In the Museum section of this website I have noted that there was even an Officer's Mess Cup for wrestling on horseback.

Figure 55: Tent pegging at Latimer Camp in 1903.

Figure 56: Serjeant Herbert MacIntosh who became the Squadron Quarter Master Sergeant of ‘D’ Squadron ready for tent pegging at Latimer Camp in 1903.  

Figure 57: Lemon cutting, whereby a Trooper mounted on horseback attempted to cut a lemon which had been mounted on a post with his sword during sports at Latimer Camp in 1903.