U.S. Army National Guard
America's oldest military component — the citizen-soldier reserve whose 2025 federalization across six U.S. cities tested the Posse Comitatus line, and whose most famous alumnus now runs the Pentagon.
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- Established
- 1636
- Country
- United States
- What it is
- The primary combat reserve of the U.S. Army, per the National Guard Bureau
- Oldest component
- Traces to organized militias of 1636 in the Massachusetts Bay Colony — the oldest continuously operating U.S. military component
- Dual mission
- State duty under the governor and federal duty under the president — two commanders-in-chief, not one
- Duty statuses
- State Active Duty (governor, state funded), Title 32 (federally funded, state command), Title 10 (federalized, presidential command)
- Service model
- The traditional part-time model is one weekend a month and two weeks a year, with full-time paths through AGR, ADOS orders, Title 10 tours, and military-technician roles
- Where it serves
- All 50 states, three territories, and the District of Columbia
- Combat role
- Combat arms — infantry, armor, artillery, and aviation — in contrast to the Army Reserve's weighting toward support roles
- Famous guardsman
- Pete Hegseth, commissioned in 2003, served as an infantry officer through 2021 with tours at Guantánamo Bay, Iraq, and Afghanistan, earned two Bronze Stars, and was confirmed as Secretary of Defense on January 24, 2025, by a 51–50 vote
- 2025 deployments
- Guard units were federalized or mobilized for Los Angeles, Washington D.C., Memphis, New Orleans, Portland, and Chicago — drawing four state lawsuits
- The legal line
- The Insurrection Act (1807) suspends the Posse Comitatus Act's (1878) ban on domestic military law enforcement; a federal judge ruled on September 2, 2025 that the Los Angeles deployment crossed it
- Insurrection Act history
- Last invoked by President George H.W. Bush in 1992, at California's request, to suppress unrest in Los Angeles after the Rodney King verdicts
Overview
No other American military force answers to two commanders-in-chief. The Army National Guard serves the governor of its home state in peacetime and the president of the United States when federalized — a dual chain of command older than the republic itself, tracing to the organized militias of the Massachusetts Bay Colony in 1636 (ArmyNG.com). It is the primary combat reserve of the U.S. Army, in the National Guard Bureau’s own description: not a support pool but the combat-arms fighting force — infantry, armor, artillery, aviation — that rounds out the active Army (ArmyNG.com).
In 2025 that dual mission was tested harder than at any point in living memory. Federalized Guard units deployed to six American cities — Los Angeles, Washington D.C., Memphis, New Orleans, Portland, and Chicago — under competing legal authorities, drawing four lawsuits from states and cities that said the deployments were unlawful (Current History (University of California Press)). And the man who signed the federalization orders was himself a product of the force: Pete Hegseth, confirmed as Secretary of Defense on January 24, 2025 by a 51–50 Senate vote with the Vice President breaking the tie, had served as an Army National Guard infantry officer from 2003 to 2021, with tours at Guantánamo Bay, in Iraq, and in Afghanistan (Ballotpedia).
Two missions, three statuses
The Guard’s split identity is mechanical, not just ceremonial. A guardsman can serve in three distinct duty statuses. Under State Active Duty, the governor commands and the state pays. Under Title 32, the federal government funds the mission but the governor keeps command. Under Title 10, the president federalizes the unit and takes full command (ArmyNG.com). That middle category — federally funded, state commanded — is what made the 2025 Washington deployment legally distinct from the Los Angeles one: because the District of Columbia’s Guard answers directly to the president, it could be mobilized under Title 32, where the Posse Comitatus Act’s restrictions do not apply (Current History (University of California Press)).
The traditional service model is the familiar citizen-soldier bargain: one weekend a month, two weeks a year. Full-time paths exist alongside it — Active Guard Reserve status, Active Duty for Operational Support orders, Title 10 tours, and military-technician roles (ArmyNG.com). And the Guard’s role within the Army is sharper than its part-time image suggests: it holds the combat arms, while the Army Reserve is weighted toward combat support and combat service support (ArmyNG.com). The force operates in all 50 states, three territories, and the District of Columbia (ArmyNG.com).
The guardsman who runs the Pentagon
Hegseth’s service arc reads like a tour of the Guard’s post-9/11 missions. Commissioned in 2003, he deployed to Guantánamo Bay in 2004–2005 with the New Jersey Army National Guard as a second lieutenant, then to Iraq in 2005–2006 with the 3rd Brigade of the 101st Airborne Division — serving in Baghdad and Samarra as a first lieutenant, first as a platoon leader and then in civil-military operations (Ballotpedia). In 2012 he deployed to Afghanistan with the Minnesota Army National Guard as a captain, working as a senior counterinsurgency instructor in Kabul (Ballotpedia). He made major in 2015 and moved to the Individual Ready Reserve, rejoined the Guard in 2019, and separated from the IRR in January 2024 (Ballotpedia). His decorations include two Bronze Stars, two Army Commendation Medals, the National Defense Service Medal with a Bronze Service Star, and both expert and combat infantryman badges (Ballotpedia).
That history gave the 2025 deployments an unusual symmetry: the defense secretary ordering Guard federalizations was himself a former Guard officer who had deployed under the same Title 10 authorities he was now invoking. In late September 2025, it was Hegseth’s memo to the Oregon adjutant general that instructed the federalization of 2,000 Oregon Guard members for Portland (Current History (University of California Press)).
2025: six cities and the legal line
The legal framework the deployments ran up against is old. The Insurrection Act of 1807 (now 10 U.S.C. Sections 251–255) lets the president deploy troops domestically under declared conditions — and when invoked, it suspends the Posse Comitatus Act of 1878, which otherwise bars federal military personnel from acting as domestic law enforcement (Current History (University of California Press)). Courts have read Posse Comitatus to prohibit federal troops from arrest, seizure of evidence, searches, criminal investigation, and similar activities (United States v. Red Feather, 1975) — while leaving advisory, training, reconnaissance, and logistics support lawful (Current History (University of California Press)).
Los Angeles became the test case. In the summer of 2025, after protests against stepped-up immigration raids, the administration federalized the California National Guard under Section 12406 of Title 10 and deployed 700 Marines, tasking them with guarding federal buildings and protecting immigration agents (Current History (University of California Press)). Governor Gavin Newsom sued immediately, arguing the protests were not a rebellion, that he had not been properly notified, and that the deployment exceeded lawful authority (Current History (University of California Press)). District Judge Charles Breyer granted a temporary restraining order — which a Ninth Circuit panel blocked, letting the deployment continue — and then ruled on September 2 that the federal troops had in fact engaged in law enforcement in violation of the Posse Comitatus Act, adding that the government cannot keep state troops under federal control indefinitely once the legal emergency passes (Current History (University of California Press)). The last federal troops left Los Angeles by December 15, and by December 31 the administration had dropped its effort to maintain the deployments in LA and other cities (Current History (University of California Press)).
Two other models ran in parallel. In Memphis (September 15, 2025) and New Orleans (December 2025), the administration asked cooperative governors to volunteer Guard troops for a federal mission while the troops stayed under state command — no federalization at all, and no legal remedy for the objecting mayors and city councils (Current History (University of California Press)). In Portland, the federalization route produced the sharpest judicial rebuke: after Governor Tina Kotek sued within hours of the September 27 authorization, District Judge Karin Immergut granted a temporary restraining order on October 4, finding the president had likely exceeded his authority — and when the administration rerouted federalized California Guard troops toward Oregon, she issued a second restraining order covering them too (Current History (University of California Press)).
Chicago produced the fourth lawsuit. Illinois and the city of Chicago sued after weekend orders federalized 300 Illinois National Guard members and mobilized another 400 Texas Guard members for deployment to the city; at an early hearing, federal lawyers said the Texas troops were already in transit, and District Judge April Perry allowed the deployment to continue while the government prepared its reply (bdnews24). The standoff prompted the president to threaten invoking the Insurrection Act itself — a law used sparingly in extreme unrest and last invoked by President George H.W. Bush in 1992, when California’s governor requested military aid to suppress the Los Angeles unrest after the trial of the officers who beat Rodney King (bdnews24).
What this profile does not claim
This profile does not state the Guard’s current end strength or drill-force headcount — no fully-read source in this profile’s research gave a verified figure. It does not give precise mobilization totals for the post-9/11 wars or Hurricane Katrina; the National Guard Bureau’s fact sheet carrying those figures was not accessible during research, and the numbers are held back rather than cited from snippets. It does not assert the outcome of Illinois v. Trump or any 2026 Supreme Court proceedings on the deployments — those developments were reported only in snippets, not read in full. It does not claim the 2025 deployments represented a particular partisan motive beyond what the governors’ lawsuits and the court rulings themselves allege and find. The Dick Act and the National Defense Act milestones of the early 20th century are standard Guard history but were not verified from a full-read source here, so they are omitted rather than asserted.
Timeline
- 1636
- The Massachusetts Bay Colony organizes the first citizen militias — the direct ancestors of today's National Guard, and the oldest continuously operating military force in the United States.
- 2003
- Pete Hegseth is commissioned into the Army National Guard.
- 2004
- Hegseth deploys to Guantánamo Bay with the New Jersey Army National Guard as a second lieutenant.
- 2005
- Hegseth deploys to Iraq with the 3rd Brigade of the 101st Airborne Division, serving in Baghdad and Samarra as a first lieutenant — first as a platoon leader, then in civil-military operations.
- 2012
- Hegseth deploys to Afghanistan with the Minnesota Army National Guard as a captain, serving as a senior counterinsurgency instructor in Kabul.
- 2015
- Hegseth is promoted to major and moves to the Individual Ready Reserve.
- 2019
- Hegseth rejoins the Guard after his time in the Individual Ready Reserve.
- 2024
- Hegseth separates from the Individual Ready Reserve, ending his uniformed service arc.
- 2025
- On January 24, the Senate confirms Hegseth as Secretary of Defense, 51–50, with the Vice President casting the tie-breaking vote.
- 2025
- In the summer, the California National Guard is federalized for Los Angeles and 700 Marines are deployed; in July the Defense Department begins winding down most of the Guard deployment.
- 2025
- On August 11, an executive order takes control of D.C.'s Metropolitan Police and mobilizes the District's National Guard under Title 32.
- 2025
- On September 2, District Court Judge Charles Breyer rules that the federal troops in Los Angeles engaged in law enforcement in violation of the Posse Comitatus Act.
- 2025
- On September 15, a presidential memorandum sends Guard troops to Memphis with the Tennessee governor's cooperation — no federalization; on September 27, 2,000 Oregon Guard members are federalized for Portland under Section 12406 of Title 10.
- 2025
- On October 4, District Court Judge Karin Immergut grants a temporary restraining order blocking the Portland federalization; Illinois and Chicago sue over a planned deployment of 300 federalized Illinois Guard members and 400 Texas Guard members to Chicago.
- 2025
- In December, the last federal troops leave Los Angeles, a New Orleans deployment is authorized with Louisiana's governor's cooperation, and the D.C. Circuit stays a district court order against the District's deployment on December 17.
Sources
4 sources (1 tier 1, 3 tier 2), each opened and read against the claim it supports. Every source is independent of the subject; no first-party material is cited. See the source policy.
- Supports: The 2025 deployments to Los Angeles, Washington D.C., Memphis, New Orleans, Portland, and Chicago; the Insurrection Act, Posse Comitatus Act, and Title 10 Section 12406 legal framework; the Breyer, Immergut, and appellate rulings; the governor-cooperative Memphis and New Orleans model Open original source
- What Is the National Guard? Tier 2Supports: The Guard as the Army's primary combat reserve; dual state/federal mission; State Active Duty, Title 32, and Title 10 statuses; the part-time service model and full-time AGR/ADOS/technician paths; combat-arms role versus the Army Reserve; 50 states, three territories, and D.C.; the 1636 militia origin Open original source
- Pete Hegseth Tier 2Supports: Hegseth's 2003 commission; Guantánamo Bay 2004–2005; Iraq 2005–2006 with the 101st Airborne; Afghanistan 2012 as a Minnesota Guard captain; major 2015, Individual Ready Reserve, 2019 return, January 2024 separation; two Bronze Stars and other decorations; January 24, 2025 confirmation as Secretary of Defense, 51–50 Open original source
- Supports: Illinois and Chicago's lawsuit over the Chicago deployment; the orders federalizing 300 Illinois Guard members and mobilizing 400 Texas Guard members; the Insurrection Act's last use in 1992 by George H.W. Bush in Los Angeles after the Rodney King verdicts Open original source
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