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 School at Weedon , Northamptonshire , are reheasring for the Royal Tournament , which opens at Olympia next month . The men taking part are picked fromall cavalry units of the British Army . Photo shows , trooper takes a jump without the aid of stirrup or rein . 14 April 1936