The Return of the Swallow King

The special forces soldier traveled back to the Anti-Japanese War and became the young master of Swallow Gate. After obtaining the God of War System, he began to counterattack and successfully ascended to the throne of the sect master. Let’s see how Yan Nanfei built up his army and special forces under the heavy obstruction of the devils and fought fiercely against them. The ninja organization was not worth mentioning in front of him. He had no way to deal with the assassins from all over the world. How did he deal with the joint attacks from all over the world?