Complex sentence: The Palmach, its three best combat units of the 1948 war had been disbanded at Ben-Gurion's instruction, many experienced officers had left the army after the war, and Israeli society had undergone a difficult period of impoverishment.
Split into simpler sentences: The Palmach, its three best combat units of the 1948 war, had been disbanded at Ben-Gurion's instruction. Many experienced officers had left the army after the war, and Israeli society had undergone a difficult period of impoverishment.