On the 5th of July, 1738, the FOURTH HORSE, and the Royal regiment of Horse Guards, were reviewed by His Majesty on Hounslow Heath, and their appearance and discipline were approved of by the King. [Sidenote: 1740] [Sidenote: 1741] After the review the FOURTH HORSE marched into quarters in Staffordshire. During the summer of 1740 they were encamped near Newbury; and in 1741 formed part of a body of troops encamped on Lexdon Heath, near Colchester.[44] [Sidenote: 1742] [Sidenote: 1743] Towards the close of the summer of 1742 a British army proceeded to Flanders, to make a diversion in favour of the Queen of Hungary, whose dominions were overrun by the armies of France and Bavaria; but the FOURTH HORSE remained in England, and in the beginning of May, 1743, they marched into quarters near the metropolis, and resumed their duties of attendance on the Court. On the 17th of the same month one squadron was sent in pursuit of a number of deserters from Lord Semphill's (42nd) Highland regiment, a corps formed in 1739 of independent companies of infantry, raised in the Highlands, for service in the mountain districts during the disaffection which prevailed for some years in the north of Scotland. The Highland regiment was designed for foreign service. In pursuance of this object it marched to the south of England, and on the 14th of May was reviewed by General Wade on Finchley Common, when the novelty of the scene attracted thousands of spectators to view the unique costume of the corps, and its appearance and discipline were generally admired. After the review the Highlanders were ordered to Gravesend, to embark for Flanders, but, as many of the men had enlisted on the presumption that they would never be required to quit the kingdom, and a report being spread amongst them that they were designed for the West Indies, a country which, at this period, was considered as a charnel-house for Europeans, about 150 of them deserted with their arms, and proceeded in a body towards Scotland.