The military's 'COVID Support Force', formed in response to the coronavirus outbreak, is to be overseen from Aldershot in Hampshire.
The force will be led from Standing Joint Command HQ, through a structure which includes ten regional commands.
It will respond to requests for assistance from public services and civilian authorities, and include reservists, who have been put on standby.
An extra 10,000 British military personnel are being placed at higher readiness, in addition to 10,000 already on standby to respond to emergencies.
One hundred and fifty military personnel are due to begin training to drive oxygen tankers on Monday - the NHS could use their skills if required.
The military has also confirmed the names of two operations during the COVID-19 response - Operation Broadshare, which includes planning for tasks abroad, and Operation Rescript, which is looking ahead to what will happen in the UK.