President Donald Trump has thrust the military into a central role in deterring illegal crossings into the U.S. at its southern border.

U.S. Army Sgt. Salvador Hernandez stands beside Stryker combat vehicles while watching over the U.S.-Mexico border fence from ...

There are now more than 10,000 military troops, including active‑duty soldiers and Marines and National Guard forces, stationed along the southern border.

US military expands enforcement zone to 1/3 of southern border The military is expanding its authority and reach along swaths of the southern U.S. border where troops have been empowered to detain ...

Designated militarized zones will soon cover nearly one-third of the U.S. border with Mexico under supervision of nearby military bases.