How did the Second Amendment connect gun ownership with a well-regulated militia?

The Second Amendment states, "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed". Historically, the connection between gun ownership and the militia was rooted in the belief that an effective militia required citizens to be armed.1234

In the 18th century, the concepts of individual and collective rights were often viewed as inseparable: individuals were expected to own firearms specifically to fulfill their duty to serve in a militia for the defense of the nation and to check potential government tyranny. Many early American laws mandated that able-bodied men own guns and register them for militia service.241

While the Supreme Court’s 2008 ruling in District of Columbia v. Heller affirmed an individual right to possess firearms for self-defense independent of militia service, it maintained that this interpretation is consistent with the framers' belief that disarming citizens was the most effective way to destroy a militia. Conversely, many historians have long argued that the amendment was intended solely to protect the right of individuals to participate in a state-organized militia.32