Left virtually defenseless when many of its castles were destroyed by the Earthquake of 1346, it nonetheless repelled an invasion of the English Guglers of Enguerrand de Coucy at Entlebuch.  
In its later years, Nicholas von der Flue saved it from dissolution by arranging the Compact of Stans.  Left virtually defenseless when many of its castles were destroyed by the Earthquake of 1346, it nonetheless repelled an invasion of the English Guglers of Enguerrand de Coucy at Entlebuch.  Earlier, it was excommunicated after seizing Einsiedeln Abbey, but the ban was lifted by Louis of Bavaria, whom it thereafter supported.  It was renewed in the Pact of Brunnen after it crushed two attempts to punish it at Morgarten and Sempach, and in 1499 it signed the Treaty of Basel with Swabia, in which it dissolved in favor of a full confederation.  FTP, what was this anti-Hapsburg alliance between Uri, Schwyz and Unterwalden that became the nucleus of Switzerland?
In its later years, Nicholas von der Flue saved it from dissolution by arranging the Compact of Stans.  
{The Everlasting League} (Accept Ewige Bund or League of the Three Forest Cantons or Dreiwaldst?terbund, but PROMPT on "Swiss League" and DO NOT ACCEPT "Swiss Confederation")