The use of horses in World War I (1914–1918) marked a transitional period in the evolution of armed conflict. Cavalry units were initially considered essential offensive elements of a military force, but over the course of the war, the vulnerability of horses to modern machine gun, mortar, and artillery fire reduced their utility on the battlefield. This paralleled the development of tanks, which ultimately replaced cavalry in shock tactics. While the perceived value of the horse in war changed dramatically, horses still played a significant role throughout the war. All of the major combatants in World War I began the conflict with cavalry forces. Imperial Germany stopped using them on the Western Front soon after the war began, but continued with limited use on the Eastern Front, well into the war. The Ottoman Empire used cavalry extensively during the war. On the Allied side, the United Kingdom used mounted infantry and cavalry charges throughout the war, but the United States used cavalry only briefly. Although not particularly successful on the Western Front, Allied cavalry had some success in the Middle Eastern theatre due to the open nature of the front, allowing a more traditional war of movement, in addition to the lower concentration of artillery and machine guns. Russia used cavalry forces on the Eastern Front but with limited success. The military used horses mainly for logistical support; they were better than mechanized vehicles at traveling through deep mud and over rough terrain. Horses were used for reconnaissance and for carrying messengers as well as for pulling artillery, ambulances, and supply wagons. The presence of horses often increased morale among the soldiers at the front, but the animals contributed to disease and poor sanitation in camps, caused by their manure and carcasses. The value of horses and the increasing difficulty of replacing them were such that by 1917, some troops were told that the loss of a horse was of greater tactical concern than the loss of a human soldier. Ultimately, the blockade of Germany prevented the Central Powers from importing horses to replace those lost, which contributed to Germany's defeat. By the end of the war, even the well-supplied US Army was short of horses. Conditions were severe for horses at the front; they were killed by rifle and artillery fire, suffered from skin disorders among other diseases, and were injured by poison gas. Hundreds of thousands of horses died, and many more were treated at veterinary hospitals and sent back to the front. Procuring fodder was a major issue, and Germany lost many horses to starvation. Several memorials have been erected to commemorate the horses that died. Artists, including Alfred Munnings, extensively documented the work of horses in the war, and horses were featured in war poetry. Novels, plays and documentaries have also featured the horses of World War I.
Cavalry
Many British tacticians outside of the cavalry units realized before the war that advances in technology meant that the era of mounted warfare was coming to an end. However, many senior cavalry officers disagreed, and despite limited usefulness, maintained cavalry regiments at the ready throughout the war. Scarce wartime resources were used to train and maintain cavalry regiments that were rarely used. The continued tactical use of the cavalry charge resulted in the loss of many troops and horses in fruitless attacks against machine guns. Early in the war, cavalry skirmishes occurred on several fronts, and horse-mounted troops were widely used for reconnaissance. Britain's cavalry were trained to fight both on foot and mounted, but most other European cavalry solely relied on the shock tactic of mounted charges. There were isolated instances of successful shock combat on the Western Front, where cavalry divisions also provided important mobile firepower. Beginning before the war, cavalry was deployed alongside armoured cars and aircraft, this was later extended to working in co-operation with tanks, notably at the Battle of Cambrai, where cavalry was expected to exploit breakthroughs in the lines that the slower tanks could not. This plan never came to fruition due to missed opportunities by command. At Cambrai, troops from Great Britain, Canada, India and Germany participated in mounted actions. Cavalry was still deployed late in the war, with Allied cavalry troops harassing retreating German forces in 1918 during the Hundred Days Offensive, when horses and tanks continued to be used in the same battles. "Cavalry was literally indispensable" on the Eastern front and in the Middle East. The Cavalry Manual, written in 1912, was unchanged throughout the war. Douglas Haig believed that the cavalry arm could also be effective strategically. This was proven to be wrong and the blame is laid with the higher echelons who were unable to establish a Command, Control and Communications structure which could effectively involve the use of cavalry divisions or corps. Cavalry was also used with good effect in Palestine, at the Third Battle of Gaza and Battle of Megiddo. British cavalry officers, far more than their continental European counterparts, persisted in using and maintaining cavalry, believing that mounted troops would be useful for exploiting infantry breakthroughs, and under the right circumstances would be able to face machine guns.
British Empire
United Kingdom
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