Grolman took part with Kleist in the victory of Kulm and recovered from a severe wound received at that action in time to be present at the Battle of Leipzig. He played a conspicuous part in the campaign of 1814 in France after which he was made a major general. In this rank be was appointed quartermaster-general to Field Marshal Prince Blücher and after his chief and Gneisenau, Grolman had the greatest share in directing the Prussian operations of 1815.