To return to d’Erlon. By starting an hour and a half later than he was ordered to do, he lost most valuable time; and throughout the day he took no pains to make up for the delay, although he actually received an order from Soult, late in the afternoon, to the effect that he was to join Reille at Gosselies that evening. Instead of this, by nightfall his leading division, Durutte’s, was at Jumet, 1½ miles in rear of Gosselies, and his Headquarters at Marchienne, 6 miles in rear! Matters had not progressed at all satisfactorily on the Left Wing. _The 15th of June on the side of the Allies._ Blucher had decided upon a concentration of his whole army at Sombreffe, in the event of Napoleon attacking by Charleroi. Therefore, on the evening of the 14th, he ordered the Second, Third, and Fourth Corps to concentrate on Sombreffe, while the First Corps was to make a stout resistance, and fall back slowly on Fleurus, which Zieten was to hold, in order to gain time for the concentration. These arrangements were made without any definite agreement between Wellington and Blucher, as to the Duke’s movements under these circumstances. It was understood that each should give the other all the assistance in his power, in the event of a French attack; but no formal undertaking for definite action was entered into. Besides, Blucher, when he ordered his concentration, believed that Wellington’s troops were too scattered to allow of their concentration within two days. He could not therefore have expected much actual support from Wellington. There was also the possibility that Wellington himself was confronted with a strong force.