Do you know about war memorial of Korea? Many people know about the war memorial of Korea, because many countries' flags in outside. There are many wars in the world. First there is the great victory against Sui China. Sui China attacked Goguryeo with 1 million soldiers, but Goguryeo defeated them. The Sui emperor was so angry, he sent another army of 300,000 men and attacked Goguryeo's capital, and there is a famous general of Goguryeo and Sui China. The Sui China's famous general is Wu-jong-moon. And Goguryeo's famous general is Eul-Ji-moon-deok. The Sui army reached the Sal-su river. When they crossed half way through the river, Eul-Ji-moon-deok opened the dam. Most drowned and only 2700 soldiers survived. And there is a Mongol invasion. Goguryeo ran away to Gangwha Island. However the people of Goguryeo did not give up. A brave army called Sam-bal-cho kept fighting to the end, And also there is Imjin war. Japan attacked Joseon in 1592. This war lasted seven years. This war's hero is Admiral Lee sun-shin. He predicted the war and prepared the military. He made the first ironclad ship in the world. It was called Geo-buk-seon. Last, there is a smoke signal station. The Joseon people used smoke signal station for communication. Smoke was used in the daytime, and at night, they used fire. The smoke signal station's communicate is 1 smoke means normal condition, 2 smokes means the enemy is preparing the war, 3 smokes means the enemy is near the boarder, 4 smokes means the enemy crossed the boarder, and 5 smokes means it's time to fight. I know many thing about the war through this War memorial of Korea.