What year were horses officially retired from the U.S. Army as draft animals?

Question

What year were horses officially retired from the U.S. Army as draft animals?

Answer 1

"The Cavalry of the 'United States Army had its origins as a horse-mounted cavalry force that existed in various forms, in its horse mounted form, between 1775 and 1943.

The 1st Cavalry Division is the only presently existing division of the United States Army that retains the "cavalry" name and the division retains one detachment of ceremonial horse cavalry for morale and ceremonial purposes

The last horse cavalry charge by a horse Army cavalry unit took place against Japanese forces during the fighting in the Bataan Peninsula, Philippines, in the village of Morong on January 16, 1942, by the 26th Cavalry Regiment of the Philippine Scouts.

Shortly thereafter, the besieged combined United States-Philippine forces were forced to slaughter their horses for food and the 26th Regiment fought on foot or in whatever scarce vehicles were available until their surrender.

Having said that, the mounted reconnaissance unit of the 10th Mountain Division, which was often referred to within that unit as being cavalry, which it technically was not, is reported to have conducted a mounted charge as late as 1945 in Austria."

Chief, the cavalry's last horse of the original tactical horses, died in 1968 at the age of 36.

U.S. Cavalry Nov. 17 1775 - 1951