On the 11th of April, 1815, it was announced to the army in Flanders that His Royal Highness the Prince Regent, in the name and behalf of His Majesty, had appointed Field Marshal the Duke of Wellington, K.G., to be commander of His Majesty’s forces on the continent of Europe, and it was directed that the _Fifth_ British brigade of infantry should be composed of the second battalion of the thirtieth, the thirty-third, and the second battalions of the sixty-ninth and seventy-third regiments.[16] Napoleon left Paris on the 12th of June, and endeavoured, by one of those rapid and decisive movements for which he had been celebrated, to interpose his forces between the British and Prussian armies, and then attack them in detail. Information of this movement arrived at Brussels during the evening of the 15th of June, and the troops were immediately ordered to prepare to march. On the 16th of June, the division of which the second battalion of the SEVENTY-THIRD formed part, pursued its course, with the other portions of the army, through the forest of Soignies, Genappe, and along the road towards Charleroi. After a march of twenty-two miles the troops arrived at the post of _Les Quatre Bras_, where the second French corps, under Marshal Ney, was developing a serious attack against that position, with very superior numbers. As the British regiments arrived at the scene of conflict, they were instantly formed for action. The repeated charges of the French were repulsed, but a considerable loss was incurred, including his Serene Highness the Duke of Brunswick, who fell at the head of his troops. The SEVENTY-THIRD had the following officers wounded:--Lieutenants John Acres and John Lloyd, and Ensigns Robert Greville Heselrige and Thomas Deacon. Lieutenant Acres died of his wounds. One drummer, and three rank and file were killed, and one serjeant and forty-three rank and file wounded. Marshal Blucher had been attacked on the 16th of June by Napoleon at Ligny, and the Prussians, after a desperate conflict, were compelled to retreat to Wavre. This caused the Duke of Wellington to make a corresponding movement, to keep up his communication with them. In the course of the morning of the 17th of June, the troops were withdrawn from _Quatre Bras_, and proceeded towards _Waterloo_. On this day, the SEVENTY-THIRD had Lieutenant Joseph William Henry Streaphan and three rank and file killed.