Kantai Kessen is a term that translates to "Decisive Naval Battle" in Japanese. It refers to a strategic concept in naval warfare, particularly in the context of the Imperial Japanese Navy during World War II. The idea emphasizes the importance of engaging in a significant battle that could determine the outcome of a conflict, often involving large fleets and key naval assets. In the context of Japanese history, Kantai Kessen was exemplified in battles such as the Battle of Midway and the Battle of Tsushima. These engagements were seen as pivotal moments where the fate of naval dominance could be decided, influencing the broader course of the war.