British forces have been assigned to help with peacekeeping.

英国军队被派遣协助维持和平。

《牛津词典》

The Metropolitan Police and its supporting forces assigned 84, 000 officer-hours to the operation and warned there would be a "swift and efficient policing response" at the first sign of trouble.

BBC: Policing protest: Case studies of how forces perform

Approximately 61, 000 of these forces are assigned to the North Atlantic Treaty Organization (NATO)-led International Security Assistance Force (ISAF) in Afghanistan.

WHITEHOUSE: Letter from the President -- War Powers Resolution

We doubled the personnel assigned to Border Enforcement Security Task Forces.

WHITEHOUSE: President Obama on Comprehensive Immigration Reform