Order of Battle: Morning Sun is a tactical simulation game set during the Sino-Japanese War, focusing on the Battle of Shanghai. Players assume command of the Japanese forces, tasked with territorial expansion and resource acquisition in China. The game emphasizes strategic planning and resource management as players navigate the complexities of warfare against numerically superior Chinese forces, who are hindered by outdated equipment and internal strife.

The gameplay features well-trained Japanese troops and a dynamic battlefield where the tides of war can shift rapidly. As the conflict unfolds, players must adapt their strategies to respond to the overstretched Japanese army and the resurgence of Chinese military efforts. The game combines historical accuracy with engaging tactical elements, making it a compelling choice for fans of military simulation.