Truce of Ulm
From Wikipedia, the free encyclopedia
Truce of Ulm was a truce signed in Ulm on March 14, 1647. France and Sweden invaded Bavaria during the Thirty Years' War and forced the prince-elector Maximilian I, Duke of Bavaria to conclude the truce and to renounce his alliance with Ferdinand II, Holy Roman Emperor. By the autumn he broke the truce and returned to the empire.