Brother Steve Todd found this: The Martial Chronicles: In the Trenches
A really good quote:
“The lessons learned during the war were not completely lost though. It was during the war that Bill Underwood came up with his Combato, and where Viktor Spiridonov and Vasil Oshchenko developed the theories they would use to create Samooborona Bez Oruzhiya. What was learned in the trenches and battlefields of the First World War would be put to use to help create the British, Canadian, and American close-quarters combat program, the predecessor of our modern combatives.”
Check out this link for the whole story: http://www.bloodyelbow.com/2012/11/12/3614692/the-martial-chronicles-in-the-trenches
