Archaeologist Deni Seymour discovered a bronze cannon in Arizona that she said is about 500 years old — the oldest firearm found in the continental U.S.

American service members moving stateside with a cat or dog from countries considered high-risk for rabies could soon qualify for a larger relocation reimbursement from the Defense Department.

Russia’s top military officer called his U.S. counterpart to give advance warning of Russia’s drills in the Mediterranean Sea, officials said Thursday, in what was a rare contact amid high tensions between Moscow and Washington.

Americans support increased military spending even while many overestimate how much is already being spent, according to an annual survey.

The Navy announced updates to its Fitness Enhancement Program, giving sailors who come up short on the service’s body composition assessment standards an incentive for passing the fitness phase with a score of excellent-low or higher.

The Marine Corps’ second-ever littoral anti-air battalion gives its seaborne quick-reaction force the means to defend against aerial attacks on contested islands in the Indo-Pacific.

Florida Gov. Ron DeSantis repeatedly vowed during his presidential campaign to send troops to the U.S. southern border, authorize lethal force against migrants attempting to cross between ports of entry, and even consider firing missiles into Mexico. Now, should Trump ask him to lead the Pentagon, DeSantis may have a chance to fulfill those promises.

Defense Secretary Lloyd Austin used a speech at West Point Wednesday to forcefully endorse having women in combat roles and emphasize the military’s obligation to defend the U.S. Constitution.

Brian Thompson led one of the biggest health insurers in the U.S. but was unknown to millions of people his decisions affected. Then a targeted fatal shooting of the UnitedHealthcare CEO on a midtown Manhattan sidewalk thrust the executive and his business into the national spotlight.

National Security Adviser Jake Sullivan said Wednesday that the war in Ukraine has revealed the U.S. needs to stockpile more munitions and invest more in producing low-cost weapons.

Three U.S. Army soldiers at Fort Cavazos, Texas, have been arrested on human smuggling charges, U.S. Attorney Jaime Esparza for the Western District of Texas said Thursday.

Many moms-to-be opt for blood tests during pregnancy to check for fetal disorders such as Down syndrome. In rare instances, these tests can reveal something unexpected — hints of a hidden cancer in the woman.

As many as three men armed with guns held up a dozen people during Monday morning’s commute in a series of robberies in the Capitol Hill area, Washington police said, in one case targeting a congressional staffer from Texas near Stanton Park as he walked to work.

President-elect Donald Trump has selected Gail Slater, an Oxford-educated economic policy adviser to Vice President-elect JD Vance, to head up antitrust enforcement at the Justice Department.

President-elect Donald Trump is trying to get the Georgia election interference case against him dismissed, asserting that the state’s courts will not have jurisdiction over him once he returns to the White House next month.

President-elect Donald Trump said he would appoint David Warrington as White House counsel, substituting his campaign lawyer for a previously announced pick to serve as the president’s chief in-house lawyer.

Sen. Tammy Duckworth, D-Ill., is asking President-elect Donald Trump to use his influence among Republicans to back legislation that would expand insurance coverage of in vitro fertilization for military personnel.

A top White House official on Wednesday said at least eight U.S. telecom firms and dozens of nations have been affected by a Chinese hacking campaign.

President-elect Donald Trump on Wednesday said he has selected investment banker and Army veteran Daniel Driscoll to serve as the next Army secretary.