All good points, but I'd be rather more inclined to believe that the very strong socialist tradition in the early pioneers, was largely responsible.
...plus being outnumbered and out gunned made for an extremely pragmatic approach to combat operations. - to whit while I might say the IDF adopted the "German model", the IDF would probably say they adopted the "socialist model."
There is a very good account of IDF officer training in Reuven Gal's book, "Portrait of an Israeli Soldier."
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