The Battle of the Vittorio Veneto saw a decisive victory by the Italian Army at the expense of the Austro-Hungarian Empire, whose army was routed from the battlefield.
Austria-Hungary sued for peace with Italy in light of its impending defeat, which led to the Armistice of Villa Giusti.
The wider context
Over the course of the battle, several provinces which made up Austria-Hungary declared their independence, with Hungary officially withdrawing from the union.
This led to the dissolution of the Austro-Hungarian Empire.
Austria-Hungary’s defeat and ultimate capitulation applied further pressure on Germany’s war effort with the loss of its major ally.