In 1804, the regiment was again in the field under Lord Lake against Holkar, and, in pursuit of his army from Delhi, marched a distance of 400 miles in eighteen days, and by this rapid march saved Furruckabad from being sacked by the enemy. Lord Lake, in his public despatch, wrote in very high terms of Lieutenant-Colonel Vandeleur and the 8th Hussars (then Light Dragoons) for the rapidity and gallantry displayed in their vigorous charges. They afterwards proceeded with the army to the capture of Deeg, and were again publicly eulogised by Lord Lake for their gallant services. In 1805 the regiment was employed in covering the operations of the siege of Bhurtpore, being detached with other troops in search of a body of the enemy under Meer Khan. When arriving at Putghaut, the 8th swam the river Ganges, and subsequently found the enemy in order of battle at the foot of the Ufzulghur Hills, when two regiments of cavalry charged, with the 8th in support. The charge could not take effect at first, on account of a deep nullah being between our troops and the enemy's front, when a squadron of the 8th, under Captain Deare, made a detour to the left, and by a dashing and well-timed charge on the right flank of the enemy, put them to flight, rescued a troop of Bengal Horse Artillery, and captured all the enemy's standards. The regiment then continued on active service with Lord Lake's army, pursuing the enemy to the banks of the Sutlej, where a treaty of peace was concluded with Holkar. In 1808, the 8th took the field under command of Lieutenant-Colonel Robert Rollo Gillespie, but soon returned to quarters, on the submission of the Sikhs. From 1812 to April, 1813, the regiment was employed against the Pindarees, after which it went into quarters at Meerut.