Sentence examples for placed on alert from inspiring English sources

The army has been placed on alert.

Live-fire military maneuvers, for example, or border garrisons being placed on alert.

Still, the South Korean military has been placed on alert, the Defense Ministry said.

The incident's proximity to the border prompted the South Korean military to be placed on alert.

About 1,000 children were evacuated from Dammartin's schools and local hospitals were placed on alert.

Other schools in Marion County were placed on alert as a precaution, Woods said.

Aircraft across the region were placed on alert, military officials said.

Over the weekend, the armed services began placing on heightened alert some of their fastest deploying active-duty units.

But one week out of every month, each base was placed on an alert, known as alpha status.

All of Moscow's police were placed on high alert.

Parts of Central London were almost immediately placed on high alert.