In World War I, Australian light cavalry fought with British forces in Palestine, Turkey and Germany. After two defeats in Gaza, the British were ready to attack Belsi, a defensive town of the Turkish army, where brave light cavalry wrote legends of men and horses. Belsi is an important position of the Turkish and German coalition forces, and the occupation of this place is of vital importance to the British forces. But Belsi stands in the desert, and if the soldiers want to fight in the desert, water is very important. Even if the soldiers break through this place, if the enemy destroys the water, the whole team will still be wiped out. Coupled with the tight defense of the Turkish army, it is very difficult to break through Belsi. Instructed by his superior, Lieutenant Colonel Boucher led the fourth Cavalry Regiment to support the front line. The soldiers who were preparing for war in the barracks and left their hometown for three years often showed their deep yearning for their families in their spare time for military training. The team, made up of soldiers Frank, Tess, Scotty and Weiss, was very brave on the battlefield, and their feelings were as deep as brothers. Frank was injured on a mission and was taken to hospital for treatment. His brothers were deeply saddened when he died of an uncontrolled infection. Organizationally.