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American militia history

FROM COLONIES TO CODE.

A concise timeline of institutions, constitutional design, and changing law.

1600s–1775

Colonial militias

Militia institutions existed across the colonies under differing laws, customs, obligations, and local structures.

1775–1783

American Revolution

Militia forces operated alongside the Continental Army, sometimes reinforcing local defense and sometimes exposing limits in training, command, and sustained operations.

1787

The Constitution

Article I, Section 8 allocated significant militia powers to Congress while preserving specified state roles in officer appointment and training.

1791

The Bill of Rights

The Second Amendment was ratified as part of the Bill of Rights.

1792 onward

Federal militia statutes

Congress enacted militia laws that changed over time, eventually contributing to the modern statutory framework and National Guard system.

Modern era

Constitution, statutes, and state law

Modern legal analysis requires reading constitutional text together with federal statutes, Supreme Court doctrine, and applicable state law.