The phrase "a mustering of" is correct and usable in written English.
It can be used to describe the gathering or assembling of people, animals, or things, often for a specific purpose.
Example: "The event was a mustering of local artists to showcase their talents and collaborate on new projects."
Alternatives: "a gathering of" or "an assembly of".
Tears come whenever she dwells on her fate, but so too does a mustering of courage.
A building bursts; a car explodes; a mustering of people is wiped out.
The Kremlin has painted the deployments of warplanes and air defenses as a mustering of forces to confront the Islamic State.
Rockingham's revolutionary taste is represented in "Mares and Foals" (1763-68), a mustering of horses, without masters or grooms, in which the heads of the young are buried beneath the bellies of their dams, but which turns into a shameless exercise in sentimental lactation, the domestic virtue of the herd on display for an age besotted with the subject.
When Vunipola received the ball, there was no defender near him and he rolled towards the Quins line and, after a mustering of reinforcements threatened to block his way, he flicked a pass out of the back of his hand to De Kock.
This is not yanking but a mustering of power to get the bar moving upwards.
Always close at hand was her favorite reference book, "Brewer's Dictionary of Phrase and Fable" and in it her favorite entry — "Assemblage, nouns of" — as in, "a clutch of eggs," "a muster of peacocks," "a bench of bishops". Eudora once challenged me to play the game.
A muster of remarkable musicians who also happen to be Harvard graduates gathered in Sanders Theatre Thursday night (Oct . 11 to serenade the soon-to-be inaugurated University President Drew Faust.
We were part of a muster of youth activists meeting in Morocco, in a desert (and nearly deserted) village outside of Ouarzazate, the notable but small city on the open plateau just south of the High Atlas Mountains.
This was a mustering up of angry parents and their grievances, and the emails laid out in detail just how redress would be achieved.
