This is Captain Graham White aka 'Chalky' OC of the Army School of Ceremonial in Catterick and three-time World Pace Sticking Champion.
He describes pace-sticking as a forgotten art which we need to revive and embrace as it signifies all the core values and standards of the British Army.
The pace stick itself which basically looks like a giant compass dates back to Roman times when it was used to mark out the straight Roman roads.
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500 turns of the stick equated to 1 Roman mile at which point they would put down a keystone.
"The pace stick is used to gauge the correct length of pace and measure distance between ranks for uniformity and cohesion," explains WO2 Steven Boyle, the Sgt Maj for IMJIN Company at The Royal Academy Sandhurst
Many centuries later it was used by the Royal Artillery to mark out the distances between the guns and in 1928 it was brought into use in the drill square.
For a full analysis of pace-sticking and its origins, see Hannah King's report above.