Lafayette returned to his home province of Auvergne in October 1791. France declared war on Austria on 20 April 1792, and preparations to invade the Austrian Netherlands (today's Belgium) began. Lafayette, who had been promoted to Lieutenant General on 30 June 1791, received command of one of the three armies, the Army of the Centre, based at Metz, on 14 December 1791. Lafayette did his best to mold inductees and National Guardsmen into a cohesive fighting force, but found that many of his troops were Jacobin sympathizers and hated their superior officers. On 23 April 1792 Robespierre demanded Marquis de Lafayette to step down. This emotion was common in the army, as demonstrated after the Battle of Marquain, when the routed French troops dragged their leader Dillon to Lille, where he was torn to pieces by the mob. One of the army commanders, Rochambeau, resigned. Lafayette, along with the third commander, Nicolas Luckner, asked the Assembly to begin peace talks, concerned at what might happen if the troops saw another battle.