The word "intervened" is correct and usable in written English
It typically means to get involved in a situation in order to help or improve it. For example, "The charity organization intervened to help the homeless in the area."
"If they had, they would have intervened," he said.
However, Gardaí intervened and arrested the man following several warnings that he stay away from the defendants.
Last July he was offered his final meal, the right to make a final statement, and a dose of Ativan before the courts intervened and granted a stay of execution 90 minutes before his scheduled death.
The army have intervened, at the will of the people, but in order to take the country to the next stage of its development, which should be democratic.
Already, Roma looked to be dead and buried but that was before their captain intervened.
That was then, this is now, and an indecisive result and the messy novelty of coalition brokering have since intervened.
Army troops were present too, but none of them intervened when the vigilantes forced their way into homes and workplaces and dragged men away.
Nigel Farage, the Ukip leader, weighed in last week when he said it "might be handy" if the Queen intervened on behalf of the pro-UK side.
After the MEN intervened, Thorntons apologised, saying: "The Company does abide by copyright laws but these were not applicable in this case".
By the end, she was being reported by one cabinet minister as screaming at Sir Geoffrey Howe and, when this man intervened, screaming at him.
Evidence that Thatcher intervened to put pressure on police during the strike.
