The Battle of Sacile (16 April 1809) saw the Franco-Italian Army of Italy commanded by Eugène de Beauharnais face the Archduke John of Austria's Army of Inner Austria during the War of the Fifth Coalition. Believing that he was only opposed by the Austrian VIII Armeekorps, Eugène launched his right wing in a heavy attack against it. In the morning, the Austrians successfully held off Franco-Italian assaults on their left flank as Eugène reinforced the attack with troops from his left wing. Later in the day, John counterattacked Eugène's weakened left wing with the IX Armeekorps, forcing the Franco-Italian army to withdraw from the battlefield. The battle at Sacile was preceded by the action of Pordenone on 15 April in which the Austrian advance guard mauled the French rear guard. The Austrian victory compelled Eugène to retreat to the Adige River at Verona where he gathered reinforcements and planned a counteroffensive.