Peace of Basel
But the defeat at Calven had put an end to Maximilian's attempt to gain control over the Val Müstair and its passes. His allies of the Swabian League refused to send more soldiers to the Grisons, which was of no interest to them. Maximilian returned to Lake Constance, and subsequently led the operations on the northern border of the Swiss Confederacy. But his troops suffered many defeats, and in September 1499, he had to agree to the Peace of Basel.