Hi Den,
Seems there is some trouble with their Website. Usually you can find it under „handbook on elements of physical education sports and games for the corps of cadets“ (there are several parts and one has the unarmed combat course with line drawings. An interesting mix. Some techniques are similar to the later 1946 fm 21-20 manual h2h section, others remind me on the very early ww2 british course (because being more Wrestling based.)) so might be worth a discussion