He exchanged soon after, by giving the difference, into the 49th, which regiment he joined at Barbadoes, in 1791, and he remained doing duty there, and afterwards at Jamaica, until 1793, when he was compelled to return very suddenly to England on sick leave, having nearly fallen a victim to the pestilential effects of the climate, and an immediate embarkation being pronounced his only chance of recovery.

His first cousin, Lieutenant Henry Brock, of the 13th foot, who was ill at the same time at Jamaica, died of the fever; and the survivor always thought that he was indebted for his life to the affectionate attentions of his servant, Dobson, whom he subsequently ever treated with the kindness of a brother, until he died in his service shortly before himself, in Canada.

The mention of the following trait of great determination of character may serve as a guide to other young officers, similarly circumstanced.

When Captain Brock joined the 49th, the peace of the regiment was disturbed by one of those vile pests of society--a confirmed duellist.

Captain Brock soon proved to his brother captain, who took advantage of being a dead shot, that he was neither to be bullied nor intimidated, and the consequence was a challenge from the latter, which was promptly accepted.