The British Eastern Fleet joins the battleship Prince of Wales and the battlecruiser Repulse, and the British forces in Singapore enter an impregnable defense. After receiving information on the movement of the British Eastern Fleet from reconnaissance planes and submarines, the Japanese military sent a torpedo unit from the land base and a fleet including Shimaumi from the sea to destroy the British Eastern Fleet. How will the two armies make decisions in the face of bad weather, changes in the war situation, and various changes in the situation? What should I do to lead my allies to victory?