After the Department of Defense announced Wednesday that 1,500 troops would be initially assigned to the border mission, what bases and units they were coming from and what other forces could be included remained questions.

This is just the beginning,” one Defense official said about the deployment of active-duty troops to the border with Mexico.

Acting Defense Secretary Robert Salesses said the troops will fly helicopters to assist Border Patrol agents and help in the construction of barriers.

The move enacts President Trump's executive orders issued shortly after he took office to intensify immigration enforcement.

Defense Secretary Pete Hegseth has said that he and President Donald Trump want to “bring the warrior culture back to the Department of Defense.”

The Pentagon also will provide military aircraft ... a nod to the president’s directive to rename the Gulf of Mexico. Trump said during his inaugural address on Monday that “I will declare ...

WASHINGTON — The Pentagon said Wednesday it has begun deploying ... a nod to the president’s directive to rename the Gulf of Mexico. Trump has referred to Canada as the ‘51st state ...

This was the first time in recent memory that military aircraft were used to fly migrants out of the country, one U.S. official said.

Texas Gov. Greg Abbott said the additional troops will work alongside federal border agents amid the Trump administration's crackdown on immigrants.

WASHINGTON — The Pentagon will begin deploying as many as ... guard at a checkpoint near the International Bridge between Mexico and the United States, where migrants are waiting to be processed ...

WASHINGTON — The Pentagon said Wednesday it has begun deploying ... a nod to the president’s directive to rename the Gulf of Mexico. Trump said during his inaugural address on Monday that ...

Whatever is needed at the border will be provided,” Pete Hegseth, the new defense secretary, told reporters on Monday.