Coming some 20 years after the Burgundian Wars, it was sparked by the increased economic control mandated in the Diet of Worms by Emperor Maximilian I.  
The Grey League, League of the Ten Jurisdictions and League of God's House combined form the Three Leagues and fight for the victors in this conflict, presumably helping win the Battle of Frastan.  The victors in this conflict, which amusingly saw initial fighting at the Battle of Hard, were aided by the Rhaetian League.  Its pivotal battle, the last fought in a certain country until the 1700s, again saw the dominance of pike squares, as in an earlier conflict's battles of Grandson and Morat; that engagement was known as the Battle of Dornach.  The settlement ending this conflict saw one polity add Schaffhausen to its territories and was known as the Peace of Basel.  Coming some 20 years after the Burgundian Wars, it was sparked by the increased economic control mandated in the Diet of Worms by Emperor Maximilian I.  For 10 points, identify this conflict that saw the ? Swiss Confederation gain increased autonomy after beating an eponymous league named for a region of Southwestern Germany.
The Grey League, League of the Ten Jurisdictions and League of God's House combined form the Three Leagues and fight for the victors in this conflict, presumably helping win the Battle of Frastan.  
{Swabian War} of 1499 [or {Schwabenkrieg}; prompt on "{Swiss War}" or "{Schweizerkrieg}"]