As of December 2018, nearly 430,000 Americans served in the US Army and Air National Guard, according to Department of Defense data.
Guard members sign up to commit one weekend a month and two weeks per year for training — but are often asked to sacrifice much more in service to their state and country.
Between September 2001 and September 2015, some 428,000 members of the National Guard were sent on deployments.
When it comes to capabilities, no two states are alike — we ranked the top six, measuring everything from sheer size of force to whether the state has special forces, strike, and a brigade combat team. Overall, we found Texas has the most capable National Guard.
Texas Army National Guard soldiers from the 143rd Infantry Regiment conduct a live fire exercise at Fort Hood, Texas in October 2018.
(Texas National Guard photo by Sgt. Kyle Burns)
Don't mess with Texas' National Guard.
Texas has a number of capabilities that elevate the Lone Star State to the #1 position.
Its sheer size is a significant factor — the Texas National Guard is host to nearly 21,000 troops, including its army and air components.
Texas is also home to two companies of the 19th Special Forces Group and Air Guard fighter and attack wings that provide strike and drone capabilities.
A California National Guard soldier from the 19th Special Forces Group descends for a landing during a high altitude, high opening training near Los Alamitos, California in February 2018.
(Air National Guard photo by Senior Airman Crystal Housman)
California's National Guard forces nearly equal those found in Texas, including Green Berets in the 19th Special Forces Group.
But because the nation's most populous state only yields roughly 18,000 troops, they fall in at #2.
A Pennsylvania National Guard soldier looks out the side of a UH-60 Black Hawk helicopter near Nichols, South Carolina, in September 2018.
(Pennsylvania National Guard photo by Capt. Travis Mueller)
Pennsylvania hosts more guardsmen than California, with a force almost 18,500 members strong.
But because the state does not have Special Forces troops — the most elite forces in the Army, who are called upon for the most dangerous missions — it slid back to take the #3 spot.
F-16 Fighting Falcons assigned to the Ohio Air National Guard's 180th Fighter Wing, sit on the flight line at Patrick Air Force Base in Florida, where they fly to conduct training and maintain readiness during winter months.
(Air National Guard photo by Senior Airman Hope Geiger)
Though small in geographical size, census data shows Ohio to be the 7th most populated state in the US, so it's no surprise that it has a highly capable National Guard.
Its 16,500 guard members include Green Berets, jet pilots, and an infantry brigade combat team that has deployed to Afghanistan.
Soldiers assigned to the 101st Cavalry Regiment of the New York Army National Guard off load from a CH-47 Chinook during cold weather training in January 2019.
(Air National Guard photo by Tech. Sgt. Ryan Campbell)
5. New York
Although New York does not have Special Forces, its force is sizable at 15,500 strong.
It hosts not one but two air attack wings — who fly MQ-9 Reaper drones — and an infantry brigade combat team.
Georgia Army National Guard helicopters fly over the Georgia State Capitol during the inauguration of Governor Brian Kemp on Jan. 14, 2019.
(Army National Guard photo by Spc. Tori Miller)
Georgia may not have Special Forces, but it hosts the sixth-largest National Guard in the US, with roughly 14,000 troops including an infantry brigade combat team.
This article originally appeared on Business Insider. Follow @BusinessInsider on Twitter.