Another word for cavalry

Out of the blue, the cavalry comes to the rescue.

They might be the ones that sent the cavalry our way.

In less than two years he had taken his rank as one of the great cavalry leaders of history.

If the Indians were renegades, surely they wouldn't want to take the time to track only two people - not with the cavalry on their trail.

They were still firing, not at the cavalry which had disappeared, but at French infantry who had come into the hollow and were firing at our men.