The old campaigning schedule, which consisted in ravaging the enemy’s territory for a few months, a set battle in the open country, and a withdrawal to winter quarters, was no longer observed. If the Macedonian king did not find his enemy in the field, he besieged his towns, using siege engines to bring him to terms. Summer and winter were alike used for operations when the old array of citizen amateur soldiers had given place to the professional fighters. Alexander’s victories were won not only on the battlefield, but through the quick following up of his victories; the enemies’ power of resistance was annihilated by the rapidity with which a defeated army was pursued and never allowed a chance to gather itself together again after it was beaten. These cavalry marches in the rear of a retreating enemy, or the suddenly delivered attacks on a foe preparing to resist, attacks made irrespective of mountains and deserts, were as military achievements no less remarkable than the set battles and the sieges of strongly walled cities and citadels. Supremely characteristic of Alexander’s strategy was the pursuit after the battle of Gaugamela, when numbers of horses fell on the road from exhaustion. As a general, Alexander did great deeds and did them in an heroic style. He was a warrior distinguished by personal bravery, filled with the ardor of combat, eager to be in the thickest of the fight, and yet the physical passion of the fighter in no way dulled the acute intelligence of the general, or made him indifferent to the mastery of details in preparing for battle or in following a victory up after it had been won. He showed strategical knowledge in approaching the enemy and knew how to overcome the natural difficulties in his way. So we see him unhesitatingly marching through narrow defiles and organizing different classes of troops according to the changing conditions which confronted him. He showed high capacity in selecting his base, in looking after his communications, in providing for and provisioning his men. When all was ready, and not before, these cautious provisions gave place to the impetuous onslaught in battle and the untiring pursuit of the defeated enemy. But the duties of generalship, complicated as they were, were not allowed to interfere with the “joy of fighting.” Alexander in every fight led his cavalry in person; whenever a breach was made in a fortification he was in the first rank; whenever a town was taken he was the first to scale the wall.