Nothing that depended upon the stars was more important than decisions in time of war. The same Bonatto procured for the great Ghibelline leader Guido da Montefeltro a series of victories, by telling him the propitious hour for marching. When Montefeltro was no longer accompanied by him he lost the courage to maintain his despotism, and entered a Minorite monastery, where he lived as a monk for many years till his death. In the war with Pisa in 1362, the Florentines commissioned their astrologer to fix the hour for the march, and almost came too late through suddenly receiving orders to take a circuitous route through the city. On former occasions they had marched out by the Via di Borgo Santi Apostoli, and the campaign had been unsuccessful. It was clear that there was some bad omen connected with the exit through this street against Pisa, and consequently the army was now led out by the Porta Rossa. But as the tents stretched out there to dry had not been taken away, the flags - another bad omen - had to be lowered. The influence of astrology in war was confirmed by the fact that nearly all the Condottieri believed in it. Jacopo Caldora was cheerful in the most serious illness, knowing that he was fated to fall in battle, which in fact happened. Bartolommeo Alviano was convinced that his wounds in the head were as much a gift of the stars as his military command. Niccolo Orsini-Pitigliano asked the physicist and astrologer Alessandro Benedetto to fix a favourable hour for the conclusion of his bargain with Venice. When the Florentines on June 1, 1498, solemnly invested their new Condottiere Paolo Vitelli with his office, the Marshal's staff which they handed him was, at his own wish, decorated with pictures of the constellations.