It lies upon the people's shoulders to prepare for the war, but it lies upon the Israeli army to carry out the fight with the ultimate object of erecting the Israeli Empire.
Sometimes the way to do what you hope to do will be clear cut, and sometimes it will be almost impossible to decide whether or not you are doing the correct thing, because you'll have to balance your goals and hopes with feeding yourself, paying debts, finding work, settling for what you can get.