This mare's name was Reckless -- a pack horse during the Korean war, where rough terrain and primitive roads demanded animals to carry rifles, ammunition, and supplies to Marines on the front lines. During the battle for Outpost Vegas, she made 50 trips up and down the hill; on the way up she carried ammunition, and on the way down she carried wounded soldiers. The amazing thing -- is that she made every one of those trips up the hill, through enemy fire, without anyone leading her.
Benefit to Aid War Horses, 1917. As a horse lover, I find it so sad that so many of these beautiful willing animals who survived the war didn't return home to the green fields of England, but were either slaughtered or sold into further lives of misery.
A line of mules carrying ammunition for field artillery. Each animal has a pair of panniers, loaded with eight rounds of what appears to be 18-pound (8 kilos) shells for a field gun. There appears to be one man for every pair of mules, the two animals being tethered together.Mules were better able to cope than many of the horses in the extremely muddy conditions which can be seen in this photograph. National Library of Scotland via Flicker