 Between 1804 and 1820, the organization had been led by only three captains, but from 1820 to 1832, five captains served an average of 28.8 months each.Artillery membership also began to change; as Peterborough industrialized, its residents were less inclined to join the organization, and membership from Wilton and Lyndeborough (which was annexed to the Twenty-Second Regiment some years earlier) increased.By 1833, the organization was headed by Eleazer Putnam of Lyndeborough, most Peterborough members had withdrawn, and the artillery moved to a new headquarters near Putnam's house in South Lyndeborough.