The 105th fought at the Battle of Eylau on 8 February 1807. At 2:00 PM, Emperor Napoleon ordered an unwell Augereau to attack the Russian left flank. As the movement got underway, a blizzard swept across the battlefield. Blinded by the snow, the VII Corps veered to the left of its intended attack axis to strike the Russian center. Pounded unmercifully by a 70-gun battery and swamped by counterattacking infantry and cavalry, Augereau's soldiers suffered huge losses and the remnants fled. His division commander Desjardin was killed. The decimated VII Corps was discontinued and the survivors distributed to other corps. Habert was transferred to Claude Legrand's division in Marshal Nicolas Soult's IV Corps on 21 February. He fought at the Battle of Heilsberg on 10 June 1807 where he was wounded in the head and shoulder. On 11 July 1807 he became a commandant in the Légion d'Honneur.