[Grammar] China’s online community combine to 'troll' an individual

[kadioguy]

The 'human flesh search engine': Bizarre phenomenon where China’s online community combine in their hundreds of thousands to 'troll' an individual

http://www.dailymail.co.uk/news/art...bine-hundreds-thousands-troll-individual.html

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1. Is 'combine' here a noun or a verb?
2. Does 'their hundreds of thousands' mean 'their hundreds of thousands online users'?

 

[Roman55]

1. It's a verb. They combine = they join together.

2. Their hundreds of thousands means, hundreds of thousands of them.

 

[kadioguy]

1. It's a verb. They combine = they join together.

So the usage in the original title is of British English style. Am I right?

 

[Roman55]

It would appear so.

 

[GoesStation]

Yes. In their hundreds of thousands looks very British to this American English speaker.