Also known as:militias · citizen army · national guard
Written by attorneys · grounded in primary & secondary sources — see below
A body of citizens armed and trained for military service apart from the regular armed forces. The Constitution grants Congress power to organize, arm, and call the militia into federal service while reserving officer appointments and training to the states, and it places the militia under presidential command when federalized.
Sources & Authorities
How it applies
Common Examples
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Grand Jury Exception for Militia Service
Mohan Malhotra, a member of the state militia called into federal service during a declared public danger, faces a capital charge in military court. Prosecutors proceed without a grand jury indictment. The Fifth Amendment exception applies directly because his militia status satisfies the constitutional condition for bypassing civilian grand jury requirements.
Federal Activation Without State Consent
Melanie Morris commands a National Guard cyber unit that President Lang orders into federal service for overseas training under congressional authorization. Governor Reynolds objects and withholds consent. The federal order proceeds because Congress may direct such activation even absent a national emergency or gubernatorial approval.
Select any source to read its text and confirm it supports the definition.
Cases
Statutes
Dictionaries
Congressional Power to Organize Militia
Ming Ma leads a state militia unit that Congress has organized and armed under its constitutional authority. Federal standards now govern training and discipline for the portion called into national service. The state retains only the appointment of officers and non-federalized training functions.
Presidential Command of Federalized Militia
Monica Morgan's Air National Guard squadron receives a presidential order placing it in federal service for joint exercises abroad. Once federalized, the unit operates under the President's authority as commander in chief. State objections do not alter the chain of command.
Militia Connection to Arms Right
Marco Marquez keeps a handgun in his home for self-defense. State law attempts to ban such possession on the theory that the Second Amendment applies only during active militia duty. The individual right remains protected regardless of current militia enrollment status.
Grand Jury Requirement in Militia Context
Mason McCarthy, while serving in the militia during peacetime, faces an infamous crime charge in civilian court. Prosecutors must obtain a grand jury indictment because the Fifth Amendment exception applies only when the militia is in actual federal service during war or public danger.
Hurtado v. California110 U.S. 516, 528 (1884)
Common questions
Frequently Asked
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Does the President need a governor's consent to federalize National Guard units for overseas training?+
No. Congress may authorize the President to order Guard units into federal service for training outside the United States even without a national emergency or gubernatorial consent. Once federalized, the units fall under presidential command.
Supporting sources
When does the Fifth Amendment grand jury requirement not apply to militia members?+
The exception applies when militia members are in actual federal service during time of war or public danger. In all other circumstances, including peacetime militia duty, the grand jury protection remains in force.
Supporting sources
What powers does Congress hold over the militia under Article I Section 8?+
Congress may provide for calling forth the militia to execute federal laws, suppress insurrections, and repel invasions, and it may organize, arm, and discipline the militia while governing the portion employed in federal service.
Supporting sources
Does the Second Amendment right to keep and bear arms depend on current militia service?+
No. The right is individual and exists independently of active militia enrollment. It protects the ability to keep arms for self-defense in the home regardless of militia status.
Supporting sources
539 U.S. 558 (2003)Constitutional Law
…to legislate with regard to morality . . . rather than confined to preventing demonstrable harms"); Holmes v. California ArmyNational Guard , 124 F. 3d 1126, 1136 (CA9 1997) (relying on Bowers in upholding the federal statute and regulations banning from military service those who engage in homosexual conduct); Owens v.…