THE HONORABLE HENRY SEYMOUR CONWAY, second son of Lord Conway, and brother of Francis Earl of Hertford, was appointed lieutenant in the first foot guards in 1737, captain and lieut.-colonel in 1741, and in 1746 he was appointed aide-de-camp to the Duke of Cumberland, and promoted to the colonelcy of the fifty-ninth (now forty-eighth) foot. He was removed to the thirty-fourth foot in 1749, to the THIRTEENTH Dragoons in 1751, and to the fourth horse, now seventh dragoon guards, in 1754. In 1756 he was promoted to the rank of major-general, and in 1759 to that of lieut.-general, and he was removed to the royal dragoons in the same year. He commanded a division of the allied army in Germany under Prince Ferdinand of Brunswick in 1761; and the British forces in Germany were placed under his orders during the absence of the Marquis of Granby. He was also one of the grooms of the bed-chamber to his majesty, and a member of parliament; and having voted against ministers on the great question of military warrants, in 1764, he resigned his court appointment and military commands; but in 1768 he was appointed colonel of the fourth dragoons. In 1770 he succeeded the Marquis of Granby in the colonelcy of the royal regiment of horse guards; in 1772 he was promoted to the rank of general, and in 1793 to that of field-marshal. He died in 1795; at which period he was eldest general officer, and first field-marshal in the army. JOHN MOSTYN, _Appointed 8th July, 1754_. This officer was appointed ensign on the 29th of February, 1732, and after a short service he was promoted to captain in the thirty-first foot, from which he was advanced in 1742 to the commission of captain-lieutenant in the second foot guards. He served with his regiment on the continent, and was wounded at the battle of Fontenoy in 1745. In 1747 he was appointed aide-de-camp to King George II.; in 1751 His Majesty gave him the colonelcy of the seventh regiment of foot, from which he was removed, in 1754, to the THIRTEENTH Dragoons, and in 1757 he was promoted to the rank of major-general: in 1758 he was removed to the fifth, royal Irish, dragoons. He commanded a brigade of infantry under Charles, Duke of Marlborough, in the expedition to St. Maloes, in 1758; in 1759 he was promoted to the rank of lieut.-general, and in 1760 he was removed to the colonelcy of the seventh dragoons. He served under Prince Ferdinand of Brunswick, in Germany, and signalized himself at many general engagements and skirmishes during the years 1759-60-61, and -62; and at the termination of the war he was appointed colonel of the first dragoon guards; in 1772 he was promoted to the rank of general. He died in March, 1779. ARCHIBALD DOUGLAS, _Appointed 18th October, 1758_.