During this campaign Count Brown distinguished himself on every occasion, but most particularly at the great battle of Parma, on the 29th of June, 1734. There a desperate hand-to-hand conflict ensued in front of the city, on the high road which leads to Piacenza; and after a struggle as deadly as Italy ever saw, the Austrians remained masters of the field; but the Count de Merci, their general, was mortally wounded by a musket-ball, and Count Brown and the Prince of Wirtemberg, the lieutenant-general, had their horses shot under them. The French made their most desperate stand at a farm-house, from the walls of which "they mowed down whole companies of the Imperialists by grape and musket-shot. This dreadful conflict lasted for ten hours without intermission, when the enemy retired in good order towards the walls of Parma." On the field lay ten thousand corpses; of the Imperialists there fell the commander-in-chief, seven generals, and three hundred and forty officers, were killed and wounded. Thus ended an attack which the Count de Merci risked in direct opposition to the _advice_ of Count Brown and other officers of experience. The Imperial army now fell back upon Guastalla, where it was the good fortune of Count Brown to save it and the cause of Charles VI. from total destruction. The Austrians, under the Prince of Wirtemberg, were posted between the Crostolo and the Po, near some strong redoubts at the head of one of their bridges; and there, on the 19th of September, they were attacked by the French, when after a hard conflict of eight hours, during which Brown, then in his twenty-ninth year, charged repeatedly at the head of his regiment, the Austrians were driven back, with the loss of four standards, while the gallant Prince of Wirtemberg, old General Colmenaro, the Prince of Saxe Gotha, and many other brave men, were slain. Count Brown made incredible exertions to preserve discipline, and with his own regiment to cover the rear of the discomfited Imperialists, who were thus enabled to fall back in good order to a new and stronger position on the northward of the Po, where they kept the field until January in the ensuing year, when the wearied French and Spaniards retired into winter quarters. One of the most brilliant feats of the campaign was the destruction of the bridge which the Marshal Duke de Noailles had thrown over the Adige. At the head of his regiment the brave Irish soldier of fortune achieved this arduous task in sight of the whole French army, under a heavy discharge of cannon and musketry. Thus terminated the Lombardo campaign, in which Austria, if she did not lose her honour, won but little glory, though in the two battles of Parma and Guastalla she lost ten thousand soldiers.