Cavalry rehearse for Royal tournament . Unsaddling their mounts over breath taking jumps and carrying out the most difficult feats with superb horsemanship , troopers of the Equitation Scthool at Weedon , Northamptonshire , are rehearsing for the Royal Tournament , which opens at Olympia , next month . The men taking part are picked from all cavalry units of the British Army . Photo shows , Cavalrymen taking their horses over low hurdles , placed only a few inches from the ground , at Weedon . 14 April 1936