Lloyd Milton Brett (February 22, 1856 – September 23, 1927) was a United States Army brigadier general who was a recipient of the Medal of Honor for valor in action on April 1, 1880, at O'Fallon's Creek, Montana.

On July 1, 1875, he accepted an appointment to the United States Military Academy at West Point and graduated in 1879.

In what would later be known as the Battle of O'Fallons Creek he was ordered to take ten soldiers and attempt to capture the complete herd.

When Brett and his men tried to approach the trees, the Indians, who had lain down on the ground inside the woods, opened fire on the troops.

From 1910 to 1916 he served as acting superintendent of Yellowstone National Park[4] and then in September 1917 he commanded the 160th Infantry Brigade, Camp Lee, Petersburg, Virginia.

[1] While serving in World War I he received the Army Distinguished Service medal for commanding the 80th Infantry Division and their actions near Imecourt and Buzancy in November when they broke the enemy's resistance.

Citation: Fearless exposure and dashing bravery in cutting off the Indians' pony herd, thereby greatly crippling the hostiles.

General Brett commanded the 160th Infantry Brigade with particular efficiency in the markedly successful operations resulting in the occupation of the Dannevoux sector in October 1918.