In 1793 he proceeded with his regiment to Flanders, and soon after his arrival, he was detached by the Duke of York, with the second and third dragoon guards, to join the Prussians. Having united the two regiments with Lieutenant-General Count Hohenzollern's corps, he was employed in covering the left flank of the Prussian army during the siege of Valenciennes, in which service he was several times engaged in skirmishes with the French, and evinced signal ardour and gallantry. He subsequently rejoined the Duke of York's army, and was employed in covering the siege of Dunkirk; having under his command four British and Hanoverian squadrons and four pieces of flying artillery, he dislodged a body of French from Hundschuyt. His lordship was principally employed in the out-post duty during the remainder of the campaign. On the decease of his father, in January, 1794, he succeeded to the dignity of EARL OF PEMBROKE AND MONTGOMERY. In 1795 he was promoted to the rank of major-general, and was employed, in 1797, on the staff under General Sir Charles (afterwards Earl) Grey, and in the same year he was nominated to the colonelcy of the INNISKILLING dragoons. He commanded the south-west district in 1779, was promoted to the rank of lieutenant-general in 1802, and was invested with the order of the Garter in 1805. In 1807 he was sent on a special embassy to Vienna. His lordship was also appointed governor of Guernsey in the same year; and in 1812 he was promoted to the rank of general. He died on the 26th of October, 1827. THE HONORABLE SIR WILLIAM LUMLEY, G.C.B. _Appointed 3rd November, 1827.--Removed to the First, or King's Dragoon Guards, 30th April, 1840._ SIR JOSEPH STRATON, K.C.H. _Appointed 30th April, 1840._