Upon the outbreak of the French Revolutionary Wars in 1792, Alvinczy commanded a Division, steadying his demoralised men at a key stage of the victorious battle of Neerwinden in 1793, leading his men forward to capture the village; for this exploit he was awarded the Commanders Cross of the MTO. He took command of an Auxiliary army which supported the British under the Duke of York and Albany, fighting at Landrecy and in the Battle of Fleurus, before being wounded at Mariolles.