Early in the year 1801, the 49th was embarked in the fleet destined for the Baltic, under Sir Hyde Parker; and Lieut.-Colonel Brock was second in command of the land forces at the memorable attack of Copenhagen, by Lord Nelson, on the 2d of April.

He was appointed to lead the 49th in storming the principal of the Treckroner batteries, in conjunction with five hundred seamen, under Captain Fremantle,[14] of the Ganges, of 74 guns; but the protracted and heroic defence of the Danes rendering the attempt impracticable, Colonel Brock, during the hard-fought battle, remained on board the Ganges; and at its close he accompanied Captain Fremantle to the Elephant, 74, Nelson's flag ship, where he saw the hero[15] write his celebrated letter to the Crown Prince of Denmark.

Savery Brock was also on board the Ganges, and while in the act of pointing one of her quarter deck guns, his cocked hat was torn from his head by a grape shot: a naval officer, who was present, afterwards described the scene which followed this narrow escape in these words: "I now hear Sir Isaac exclaim, 'Ah! poor Savery is dead!' But Savery was not an instant on his back; in the same moment he rubbed his head, assured his brother that he was not injured, and fired the gun with as much coolness as if nothing had happened." The effect of the shot passing so near him was such that, although a remarkably powerful young man, six feet two inches in height, he was knocked down and stunned for the moment.

Of the 49th, Captain Sharp was badly wounded on board of the Bellona, and Lieutenant Dennis was wounded on board of the Monarch, which ship had 55 killed and 155 wounded, exclusive of officers, but including 8 soldiers of the 49th killed, and 20 wounded.

In addition to the 49th was a detachment of the 95th, rifles--consisting, we believe, of two companies--under Lieut.-Colonel the Honorable William Stewart,[16] who was senior officer of the troops embarked.