Catterick Garrison, the largest in the British Army, has confirmed it has a number of coronavirus cases.
An Army spokesperson told Forces News: "We can confirm that a number of service personnel at Catterick Garrison are currently self-isolating following a small number of personnel testing positive for COVID-19.
"The health and wellbeing of our personnel remains a priority and, in line with Government guidance, we are taking appropriate measures to support individuals affected."
The director of public health for North Yorkshire told the BBC earlier that in recent weeks there had been "about 25 cases associated with the military in the Catterick Garrison area".
Catterick is home to the Infantry Training Centre which trains all of the Army's infantry troops.
Earlier this week, British Forces Cyprus recorded its first confirmed cases of coronavirus since May.