What is the job of the cavalry in the US Army?

And do they always operate from vehicles such as Strykers, or are they on foot?

gregory_dittman2017-08-14T05:27:28Z

It depends, but mechanized ground cavalry units consist of tanks, APCs and sometimes mobile anti air defense systems. Air cavalry uses helicopters. Once the u nits hit a spot, the people get out of their vehicles and walk.