On August 30, the Mongols attacked the rearguard east of Xianfu and wiped it out.
From the en.wikipedia.org
Moana remained a constant threat but the Rose Cottage rearguard stayed strong.
From the keighleynews.co.uk
Now, however, UMNO heavyweights are siding with Perkasa in a rearguard action.
From the economist.com
During the day rearguard actions took place along the river bed to IGNAUCOURT.
From the en.wikipedia.org
Yet there appears to be a desperate rearguard action to deny even the possibility.
From the newscientist.com
Norwich went back on the offensive, with Jackson stretching the Burnley rearguard.
From the guardian.co.uk
The 2nd Battalion, 238th Infantry Regiment was to act as a rearguard on the coast.
From the en.wikipedia.org
Only a desperate rearguard action on the last day of the third Test saved England.
From the independent.co.uk
That is quite some rearguard from Wales, who are being aggressive in defence.
From the telegraph.co.uk
More examples
A detachment assigned to protect the rear of a (retreating) military body
A rearguard is that part of a military force that protects it from rear attack, either during an advance or withdrawal. The term can also be used describe forces protecting lines of communication behind an army.
A foam that is applied to the rabbit's back and rear end that prevents flystrike by stopping fly eggs developing into maggots.