The defeat in the Battle of Marignano ( 1515 ) set an end to Swiss aspirations to further extend their possessions .
The peace of 1516 allowed them to keep their possessions , except for Ossola which was handed back to Milan .
The defeat in the Battle of Marignano ( 1515 ) set an end to Swiss aspirations to further extend their possessions , but the peace of 1516 allowed them to keep their possessions , except for Ossola which was handed back to Milan .