While at Ashford the battalion was brigaded with the Warwick Militia and the Ninety-first Regiment, under Brigadier-General the Baron de Rottenburg. Great sickness prevailed at this station, and Surgeon James Evans and several of the soldiers died of typhus fever. On the 20th of March, 1809, the Royal authority was granted for the Seventy-first to be formed into a light infantry regiment, since which time it has been distinguished as the Highland Light Infantry. The first battalion marched on the 27th of April, 1809, for Brabourne-Lees Barracks, and was brigaded with the Sixty-eighth and Eighty-fifth Light Infantry Regiments. Every exertion was here made to increase the strength and improve the discipline of the corps. In June the first battalion was increased by a large reinforcement, consisting of several officers and 311 non-commissioned officers and privates from the second battalion, which continued to be stationed in North Britain. Several volunteers from the militia were also received at this period. Immense preparations had been made by the British Government to fit out the most formidable armament that had for a long time proceeded from England. The troops, amounting to 40,000 men, were commanded by Lieut.-General the Earl of Chatham. The naval portion consisted of 39 ships of the line, 35 frigates, and numerous gunboats, bomb-vessels, and other small craft, under Admiral Sir Richard Strachan. The object of the expedition was to obtain possession of the islands at the mouth of the Scheldt and to destroy the French ships in that river, with the docks and arsenals at Antwerp. The first battalion of the Seventy-first, towards the end of June, received orders to prepare for the above service, and marched on the 28th and 29th of that month in two divisions, encamping near Gosport. On the 16th of July the battalion, consisting of 3 field officers, 6 captains, 27 subalterns, 5 staff, 48 sergeants, and 974 drummers and rank and file, embarked at Portsmouth on board His Majesty’s ships _Belleisle_ and _Impérieuse_, and towards the end of the month sailed for the Downs. The battalion was brigaded, under Brigadier-General the Baron de Rottenburg, with the Sixty-eighth and Eighty-fifth Light Infantry, in the division commanded by Lieut.-General Alexander Mackenzie Fraser, and in the corps of Lieut.-General Sir Eyre Coote, K.B.