In at least two separate meetings Defense Secretary Pete Hegseth accused top-ranking military officers of leaking to the media and threatened to polygraph them.

Defense Secretary Pete Hegseth strongly denied sharing classified information on Signal and lashed out at former aides he claimed want to "sabotage" Trump's agenda.

At least three federal judges have blocked the ban from taking effect.

The Navy said it canceled an engagement at its academy with Ryan Holiday because it wanted to steer clear of what it saw as political content aimed at young officers.

Dakota Meyer, a Marine who was awarded the Medal of Honor for heroism in the Afghanistan War, is reenlisting in the the military and will serve in the Marine Reserves

Two service members were killed and another is in serious condition following a vehicle accident earlier Tuesday in Santa Teresa, New Mexico, NORTHCOM said in a statement

Calling it an extension of a military base, critics say, skirts federal law.

"This Russian activity in Alaskan ADIZ occurs regularly and is not seen as a threat," the North American Aerospace Defense Command said in a press release.

A second U.S. aircraft carrier is operating in Mideast waters ahead of the next round of talks between Iran and the United States over Tehran’s rapidly advancing nuclear program

The commander of the Pituffik Space Base in Greenland recently visited by Vice President JD Vance was removed from command on Thursday due to a "loss of confidence."

Trump shares a birthday with the service on June 14th, Flag Day.

The remains of the four American soldiers who died while training in Lithuania will return to the U.S. this week.

The M88 Hercules armored recovery vehicle the soldiers were in when they went missing was removed from a swamp early Monday morning after six days of work to retrieve it, the Army said.

Three of the four U.S. Army soldiers who went missing during a training mission were found dead on Monday, but the search is ongoing for the fourth soldier.

The search for four U.S. Army soldiers who went missing during a scheduled training exercise near Pabradė, Lithuania, has shifted from rescue to recovery mission.

If allowed to go into effect, the Trump administration's new policy on transgender soldiers would be a "de facto blanket prohibition," a federal judge wrote.

Seventy Black Union military members who fought in the Civil War will be memorialized in a monument planned for Rocky Mount in Franklin County, Virginia.

The search for four U.S. Army soldiers who went missing during a scheduled training exercise near Pabradė, Lithuania, has shifted from rescue to recovery mission.

Search and recovery efforts are ongoing for four U.S. Army soldiers who went missing during a scheduled training exercise near Pabradė, Lithuania.

The Trump administration has offered different, and at times contradictory, explanations for how Jeffrey Goldberg got included on the sensitive Signal chat.

U.S. and Lithuanian forces searching for four soldiers from Fort Stewart Georgia now missing after a tactical exercise.

ABC News speaks with Rep. Jason Crow who pressed National Intelligence Director Tulsi Gabbard on details from the group chat reported by the Atlantic during house intelligence committee hearing.

Alfreda Masters said she finds it "unbelievable" that the webpage honoring her father's service has been taken down as a part of DEI scrubbing at the Pentagon.

The Atlantic Editor-in-Chief Jeffrey Goldberg reacts to the pushback from Trump administration officials and declined to comment on his relationship with National Security Adviser Mike Waltz.

The soldiers, who the Army said are all based in Fort Stewart, Georgia, were reported missing on Tuesday, the Lithuanian Armed Forces said. ABC News’ Luis Martinez reports.

Five Cabinet members are facing a federal lawsuit over the use of Signal to coordinate military strikes in Yemen.

A century-old law aimed at cracking down on disloyal wartime activities is in the spotlight after Trump officials used a Signal group chat to discuss Yemen strike plans.

President Donald Trump said that the military contract, awarded to Boeing, “has been in the works for a very long time.”

The U.S. military is tracking strong early year recruiting figures across the services, a signal it will meet or exceed 2024 performances, military officials said.

U.S. District Judge Ana Reyes blocked the Trump administration from enacting the policy and offered a scathing rebuke of the Pentagon's development of the policy.

An active-duty airman was arrested for allegedly killing a 21-year-old woman on an air base in South Dakota, according to the Pennington County Sheriff’s Office

The ISIS chief, Abdallah Makki Muslih al-Rifai, also known as "Abu Khadijah," was killed in the strike along with another operative from the group, officials said.

A judge on Wednesday signaled that she was deeply skeptical that the Pentagon's handling of transgender service members complies with federal law.

An active-duty U.S. army sergeant has been charged with selling sensitive national defense secrets, according to court documents.

Prosecutors say Jian Zhao, a supply sergeant stationed at Joint Base Lewis McCord in Washington State, received thousands in exchange for selling sensitive material and encrypted hardware.

The sailor was "involved in a motor-vehicle incident with a Japanese national on Sept. 18, 2024," a Navy spokesperson said.

Lt. Cmdr. Geirid Morgan told ABC News that as an openly transgender woman, seeing the ban in "black and white" was "jarring."

"Service by these individuals is not in the best interests of the Military Services and is not clearly consistent with the interests of national security," the memo said.

U.S. Army troops in eastern Europe are using lessons learned from the war in Ukraine to help them develop new tactics and use of new technologies.

ABC News’ Martha Raddatz interviews former Army Chief of Staff Gen. George Casey Jr. on “This Week.”

ABC News’ Martha Raddatz interviews Sen. Jack Reed, D-R.I., on “This Week.”

On “This Week,” ABC News’ Chief Global Correspondent and co-anchor Martha Raddatz reports on Trump’s firing of senior Pentagon officials.

At the Conservative Political Action Conference, President Donald Trump touted his efforts to cut waste from the federal government.

President Donald Trump announced he had fired Gen. C.Q. Brown, the chairman of the Joint Chiefs of Staff, and planned to replace him with Air Force lieutenant general.

ABC News Senior White House Correspondent Selina Wang discusses leadership changes in the Pentagon and President Donald Trump's recent comments about military equipment left behind in Afghanistan.

A World War II veteran is marking his 100th milestone birthday this February.

ABC News’ Linsey Davis speaks with former CDC employee Rachael Shaw, a military spouse on next steps for her family after losing her job in recent cuts that have affected over 200,000 federal workers.

Maj. Erica Vandal, a transgender woman who served 14 years in the U.S. Army, reacts to the Trump administration's executive order that is aimed at forcing transgender people out of the military.

Gen. C.Q. Brown, the nation's top general, and Adm. Lisa Franchetti, are both on a list of generals and admirals who may be fired or removed from their jobs by Hegseth,

Gen. CQ Brown serves as the president's senior military adviser and has been chairman of the Joint Chiefs of Staff since October 2023. His four year tenure is supposed to end in 2027.