You have to have an idea first. Training is the easy bit.

The things that screw up and prevent good training and pretty easy to identify, with national culture and religion being the top of the ladder. And the top spot is probably cognitive dissonance, and traditional male culture - "Willy waving" as my wife calls it - Some "waving" is required, but it should not be the desired end state.

For anyone really interested in case study, the Palmach pretty much ticks all the boxes. The South Koreans are also worth a look.