friedrich karl arranged his army on a broad arc to encircle the french at le mans and began the offensive on 6 january. the württembergian xiii corps under the grand duke of mecklenburg advanced on the right flank along the huisne river. x corps under general konstantin bernhard von voigts-rhetz covered the left flank by advancing down the loir. in the center, iii corps and ix corps followed each other down the main road to le mans.