I missed posting this video on July 4, but it's still entertaining.

Right near the end, is that a combined horse and helicopter charge or are the horses chasing the helicopters?

Edit - found a video from July, 2023, that answers the question as horses definitely lead this charge.

The mounted unit should be like uniformed like the last rider (1920's/30's). That is the uniform my Grandfather wore during the '30s with C Troop 5th Cav. at Fort Clark. His Regiment was commanded by George S. Patton.

My great uncle (mothers side) was in the 1st Cav in the occupation forces in Japan. He was in MacArthur's security company.