Despite the obvious historic, moral and even ethical problems, the IDF adopted the German model of leadership in one gulp - rejecting the British.
Perhaps due to the political dominance of the Ashkenazim with their central European orientation in pre-1948 Palestine. That and the firsthand experience some Jewish refugees had in fighting against German arms either in national armies or in underground resistance.

Some German officers expressed their opinion post-war that the U.S.Army approach was 'right' in that it replaced blood with ammunition.
The U.S. with it's tradition of vastly expanded wartime armies of citizen-soldiers and numerically few professional officers had to be pragmatic in pressing hard what strengths the U.S. Army possessed.