After Leipzig, Kleist blockaded the fortress of Erfurt, bringing about its surrender after which, in early 1814, he marched his troops into France, where his corps was attached to Blücher's army. He then fought in the battle of Laon and in the attack on Paris. At the end of the war Kleist was promoted to the rank of "". During the Hundred Days, Kleist was given command of a Prussian corps (the North German Corps) which was to operate independently from Blücher's Army of the Lower Rhine; he was therefore not involved in the battles of Ligny and Waterloo.