After the defection and flight of General Dumourier, Kilmaine adhered to the National Convention, and by that body was appointed a general of division; and now he redoubled his energies to restore order in the army, which by the defection of its leader was almost disbanded; thus, in one month after General Dampierre took command, so ably was he seconded by Kilmaine, the discipline was completely established. He commanded the advance-guard of Dampierre in the new campaign against the allied powers, on the failure of the congress at Antwerp on the 8th of April, 1793; and his leader bears the highest testimony to the gallantry and noble conduct of Kilmaine, in the "murderous affairs of the 1st and 2nd May;" in which, according to the official report, he had two chargers shot under him. Six days of incessant skirmishing succeeded, during which Kilmaine never had his boots off, nor returned his sabre once to the scabbard; and he displayed the most reckless valour on the 8th of May, in that battle fought by Dampierre to deliver Conde. The French were routed with great loss; Dampierre was slain; and on Kilmaine as an active cavalry officer devolved the task of covering the retreat of the infuriated and disorderly army, which fell back from Conde-sur-l'Escaut, which is a barrier town, and was then the nominal lordship of the unfortunate Duke d'Enghien. On General la Marche succeeding Dampierre, he sent Kilmaine with his division to the great forest of Ardennes, which formed a part of the theatre of war, on the invasion of France by the allies; but he remained there only a short time, and rejoined the main army, which he found in the most critical circumstances. The fall of Dampierre and the arrestment of Custine acted fatally on the army of the North, which was now reduced to about thirty thousand rank and file, and these remained in a disorderly state, without a proper chief, and without aim or object--its manoeuvres committed to chance or directed by ignorance; for, with the exception of Kilmaine, its leaders were destitute of skill, experience, and energy. Quitting the camp of Caesar, they returned to their fortified position at Famars, three miles distant from Valenciennes, the approach to which it covered. Here they were attacked on the 23rd of May, driven back, and obliged to abandon the city to its own garrison under General Ferrand; a success which enabled the allies under the Duke of York to lay immediate siege to Conde and to Valenciennes, the two most important barrier towns upon the northern frontier. While the army of the North continued in full retreat towards the Scheldt, the British commander-in-chief briskly attacked Valenciennes, which General Ferrand first laid in ashes, and then delivered up; his garrison, as the reward of their obstinate defence, being permitted to march out by the gate of Cambray, on the 28th of July, with all _the honours of war_. Conde had already fallen on the 10th of the same month.