The word "massing" is correct and can be used in written English.
It is typically used to describe a large gathering of people, animals, or objects. For example, "The audience was massing in the park for the concert."
Shekau's fighters are massing at a headquarters in the northeastern town of Gwoza, in apparent preparation for a showdown with multinational forces, according to witnesses who escaped the town.
White walkers are massing north of the Wall," he tweeted.
Moreover, people living in outlying urban areas say the Taliban, far from being repelled by the prospect of an allied surge, are massing as never before.
According to China's state-controlled media, thousands of troops are massing on a holiday island in the Taiwan Strait for one of the country's biggest war games, codenamed Liberation One.
Although it had difficulty massing its forces, recruiting new members and moving freely in Afghanistan, it could still carry out operations.Intriguingly, Brigadier Roger Lane, the senior British commander in Afghanistan, painted a more optimistic picture.
Their commander, says Mr Mahato, squatting before a poster of Mount Cook with an image of a Hindu priestess pasted onto its snowy summit, will have to perform penitential sit-ups while clutching his ears.A short walk (or 15-minute crawl) away, in the village of Lalgarh, along a road blockaded by a few felled trees, hundreds of state police and central-government paramilitary troops are massing.
Now, perilously near those anniversaries, crowds are massing in Miami to prevent the seizure by federal agents of Elian Gonzalez, a six-year-old Cuban refugee who must, under American law, be returned to his father and to Cuba.
From October 22nd-24th Mrauk-u, a tourist centre in Rakhine state in Myanmar, and former capital of the independent kingdom of Arakan, turned into a war zone.Below the pagoda a spontaneous, medieval army was massing.
Tanks have been massing menacingly around the city.
The crocodile tears proved toxic, however, since he tempered them with jibes at Kuwait's rulers, along with a dash of encouragement for Kuwaiti "patriots" to mount attacks against the American troops now massing on their soil.
Malian troops may be massing in Mopti, the staging post for any attack against the rebels, but they are in no shape to launch an offensive.Mr Traoré's inauguration does not conceal the fact that the junta has yet to cede power.
