Arsenals are enormous weapons factories, capable of producing arms at a rate sufficient enough to supply an entire colony! The United States, for example, had but one arsenal when it declared independence, only building a second in 1805. Arsenals, because of their strategic importance, were often among the first targets an enemy could be expected to attack. The arsenal in Springfield, Massachusetts, America's first arsenal, was marched on by Daniel Shay, a disgruntled Revolutionary War veteran, bent on halting the Constitutional Convention of 1786, before Shay's Rebellion was put down by federal troops. America's second Arsenal, built in Harper's Ferry, West Virginia, gained great renown when, in 1859, abolitionist John Brown attempted to seize its stockpile to strike a blow against slavery.