The Battle of Crevola was fought in the spring of 1487, between a marauding Swiss army from the Valais and Lucerne[1][12] and troops from the Duchy of Milan,[1] for the supremacy of the Val d'Ossola (Eschental) .

In the year 1487, for unknown but petty reasons, Bishop Jost von Silenen entered into dispute with the Count of Arona,[2] whose seignory was the Duke of Milan.

[1] The Duke of Milan, however, ordered the Ossolani to keep the Swiss inactive with false peace negotiations, until the duchy could dispatch a sufficient army.

[9] Further bloodshed was however prevented, when a legation of the Old Swiss Confederacy negotiated a peace treaty with the Duchy of Milan on July 23, 1487.

[1][12] At ponte di Crevola, the Ossolani dedicated an Oratory to Martyr Saint Vitalis in honour and remembrance of this victorious battle.