Japanese soldiers, known as Heishi, have a long history that dates back to ancient times. They played significant roles in various conflicts, including the Sengoku period, where samurai warriors were prominent. The modern Japanese military, established after the Meiji Restoration in the late 19th century, transformed into a more organized and industrialized force. During World War II, Japanese soldiers were involved in numerous battles across the Pacific and Asia. They were known for their strong sense of duty and loyalty, often adhering to the bushido code, which emphasized honor and sacrifice. After the war, Japan adopted a pacifist constitution, leading to the formation of the Japan Self-Defense Forces.