In September 1810, 8 more crews were added, raising the unit's strength to 1,136 officers, NCOs and ratings. It suffered badly in the Invasion of Russia, fighting in several battles and decimated by cold, hunger and disease - only 85 of its officers and men were still alive when the army crossed back into Germany. Reorganised and brought up to strength with new recruits, the unit fought at Leipzig as part of the Young Guard's infantry.