 He carried two riding pistols, a sabre, and a large knife in a leather sheath for his personal protection, and was assisted by a Tipperary-born gaucho known as 'Don Eduardo'.Campbell rose to prominence as a superb guerrilla fighter, serving under José Artigas, the caudillo of a region which encompassed the present-day Argentine provinces of Entre Ríos and Corrientes, and much of Uruguay, a man regarded as one of Uruguay's founding fathers.Peter Campbell played a prominent role in the affairs of Corrientes province, and for a period after 1819 acted as its deputy governor.