The struggle against the Turks in Egypt and Palestine began with a test of endurance and engineering in harsh desert terrain. It evolved into a fast-moving mobile campaign, which resulted in Allied victory and the fall of the Ottoman Empire.
During 1914-18, British troops fought the Turks in Mesopotamia. After many setbacks, they finally took Baghdad in March 1917. This marked the high point of a long and tragic campaign fought in a harsh climate.
In 1918, the British assembled a handpicked unit to carry out a daring secret mission to the Caucasus. Their aim was to unify into an effective force the various anti-Bolshevik and anti-Turkish groups fighting there.
Gallipoli was the first major amphibious operation in modern warfare. In 1915 British Empire and French troops landed on the Ottoman-held peninsula in the Dardanelles Straits with disastrous consequences for the Allies.