As a landlocked country in south-central Asia, Afghanistan is located in the Hindu Kush Mountains with an average elevation of more than 3,500 meters in Chen Heng, which is a major obstacle to communication between Central Asia and South Asia. Afghanistan's special geographical location makes it a transportation hub among South Asia, West Asia and Central Asia, and it has always been a battleground for military strategists. Among the many forces that covet this "fat meat", Russia and Britain have sent troops to Afghanistan several times in order to compete for control of Central Asia. The first Anglo-Arab War began at 1839. The British army assembled a large number of troops to attack Afghanistan. Under the absolute disadvantage of the number of personnel, equipment and military quality, the Afghan army has been losing ground. After being refused help from Russia, the Afghan army had to retreat to Bukhara for refuge, and then Britain established a puppet regime. In order to drive away the invading army, the Afghan people rose up and the insurgents attacked the British army by taking advantage of the terrain. Finally, with the joint efforts of the Afghan people, the puppet regime was overthrown and the British army had to return to India.