The tragic thing is that (I think) the greatest 'armour minds' in the world were concentrated in the UK during the 20's and 30's. People like Fuller, Horstmann, Lindsay, Broad, Tilly, Wilson, Ricardo,
Hobart etc. etc. were fully aware of what was really needed but sadly almost chose to remain sidelined in the face of genuinely hide-bound opposition when the decisions should have been being made. Leading to rather odd concepts like the I tank.
Recently found that the Neubaufahrzeug (despite it's lack of success, a seminal design for the Germans) was a near direct copy of the British A6E1/2/3 '16 tonner' series. A military cutting edge was rarely so misdirected.
Cheers,
Adam.