A succession of battles now took place with varying success, but still leaving the Allies nearer to Paris than before. If Buonaparte turned against Blucher, Schwarzenberg made an advance towards the capital; if against Schwarzenberg, Blucher progressed a stage. To check Schwarzenberg whilst he attacked Blucher, Napoleon sent Oudinot, Macdonald, and Gerard against Schwarzenberg; but they were defeated, and Napoleon himself was repulsed with severe loss from Craonne and the heights of Laon. But Buonaparte getting between the two Allied armies, and occupying Rheims, the Austrians were so discouraged that Schwarzenberg gave orders to retreat. The Emperor Alexander strenuously opposed retreat; but the effectual argument was advanced by Lord Castlereagh, who declared that the moment the retreat commenced the British subsidies should cease. A sharp battle was fought on the 20th of March, between Schwarzenberg and Napoleon, at Arcis-sur-Aube, and Napoleon was compelled to retreat. Blucher, who had received the order to retreat from Schwarzenberg, had treated it with contempt, and replied to it by his favourite word, "Forwards!" Napoleon had now to weigh the anxious question, whether it was better to push on, and stand a battle under the walls of Paris, with his small, much-reduced force, against the Allies, and with the capital in a state of uncertainty towards him--or to follow and harass the rear of the enemy. He seems to have shrunk from the chance of a defeat under the eyes of his metropolis, and he therefore, finding a Prussian force in Vitry, crossed the Marne on the 22nd of March, and held away towards his eastern frontiers, as if with some faint, fond hope that the peasantry of Franche Comté and Alsace might rise and fly to his support. But no such movement was likely; all parts of France were mortally sick of his interminable wars, and glad to see an end put to them. The Allies had now taken the bold resolve to march on Paris and summon it to surrender.