Militia Acts of 1792 - Wikipedia
The second Act, passed May 8, 1792, provided for the organization of the state militias. It
conscripted every "free able-bodied white male citizen" between the ages of 18 and 45 into a local militia company. (This was later expanded to all males, regardless of race, between the ages of 18 and 54 in 1862.)
Militia members, referred to as "every citizen, so enrolled and notified", "...shall within six months thereafter, provide himself..." with a
musket,
bayonet and belt, two spare flints, a box able to contain not less than 24 suitable
cartridges, and a knapsack. Alternatively, everyone enrolled was to provide himself with a powder horn, ¼ pound of gunpowder, 20 rifle balls, a shot-pouch, and a knapsack.
[5] Some occupations were exempt, such as congressmen, stagecoach drivers, and ferryboatmen.