According to Gill the 1st and 2nd Battalion was attached to Montbrun division and fought at Dunzling(Dinzling). I need to buy a ticket and make it to the national archives and look at situational reports for these regiments. Some regimental histories such as the 12e Legere and 19e Chasseurs a cheval give amazing amount of information on who fought with the regiment .

Thank you for the help!