Trump told a gathering of military leaders they should use American cities as “training grounds” to fight against what he called a “war from within.”

Some 200 to 250 National Guard troops in Portland, Oregon, began reporting to duty on Wednesday and undergoing initial military training on how to respond to civil disturbances in the Democratic-run city, several officials told ABC News.

South Korea’s military has postponed its largest outdoor field training exercise (FTX) of the second half of the year in what observers say may be a goodwill gesture toward easing tensions with North Korea.

The Army Corps of Engineers started construction of the Joint Integrated Test and Training Center at Joint Base Elmendorf-Richardson.