The best cavalry sword of all time was the 1908 Pattern sword. Unfortunately it was only introduced to the British cavalry in 1908 just prior to World War I at the end of the effective usefulness of cavalry as a key military unit.
1908 British cavalry sword
The Pattern sword was designed with a pistol grip that made it excellent of charging. It was brilliantly balanced for use in a charge either slashing or as a stationary point like a spear.
