go to war
take arms
take up arms

Was he right to take arms against his own brother?

He took my arm and led me to the door.

I took her arm and moved away from the door.

She took the boy's arm and led him into her living room.

Then she took my arm and said the one thing I wanted most to hear.

He took his friend's arm, and led him to the other end of the room.

On the far side one of them came across and took her arm.

She took his arm and led him to the office at the back of the house.

She took a step and seemed to be taking his arm with her.

She came forward, took the girl's arm and led her to the door.