When the siege of _Landrécies_ was undertaken, the QUEEN'S OWN formed part of the covering army encamped at _Cateau_. At day-break, on the 26th of April, while a thick fog covered the fields and villages near the British camp, a few pistol-shots in front gave indication that the advance-posts were engaged, and soon afterwards the piquets were seen retiring before crowds of French, whose movements were partly concealed by the fog. The SEVENTH were speedily mounted and formed in front of their camp-ground; the cannonade became louder and louder, and the fog clearing, the duke of York detached the cavalry of the right wing to turn the enemy's left flank, while the SEVENTH and Eleventh light dragoons' and two squadrons of Archduke Ferdinand's hussars, supported by several other corps, moved forward to reconnoitre the French column advancing from Prémont and Marets. Encountering their opponents in the plain of St. Celian, the SEVENTH and Eleventh light dragoons raised a loud shout and dashed furiously against the adverse ranks of war, while the German hussars joined gallantly in the charge, and the enemy was overthrown and pursued with dreadful carnage. The SEVENTH were distinguished for their heroic ardour and contempt of danger, and Lieutenant O'Laughlin eminently signalized himself. Twelve hundred Frenchmen fell in the charge and pursuit, and ten pieces of cannon, with eleven tumbrils filled with ammunition, were captured, exclusive of those taken by the remainder of the army. A writer who was present at this engagement (Robert Brown of the Coldstream guards), states in his Journal, published in 1795, "_the_ SEVENTH _and Eleventh light dragoons performed prodigies of valour on our left_." The Duke of York observed in general orders, after complimenting several other corps, "_Nor is the determined gallantry with which the_ SEVENTH _and Eleventh light dragoons attacked the enemy on the left (notwithstanding their numbers), less worthy of every commendation_." The loss of the regiment on this occasion was one man and seven horses killed, nineteen men and six horses wounded. After the fall of Landrécies, the regiment proceeded by forced marches to the vicinity of _Tournay_; and on the 10th of May, when the French attacked the British position with thirty thousand men, it had another opportunity of signalizing itself. The enemy having failed in his attempt to turn the British left, directed his efforts against the centre. A favourable opportunity presenting itself, sixteen British and two Austrian squadrons were detached, under Lieut.-General Harcourt, against the enemy's right, and by a determined charge broke the French columns. A second charge proved decisive; the French were defeated, and the British troops were thanked in general orders for their excellent conduct. The SEVENTH had six horses killed; four men and four horses wounded; and two horses missing.