The Battle of Songshan in western Yunnan Province is important in China's War of Resistance against Japan, and its victory is an important turn in China's strategic counteroffensive, which plays a key role in strengthening the determination and confidence of military and civilians in the war of resistance. In this study, from the perspective of war geology, we examine the application of historical battlefield geological elements of the Battle of Songshan and their influence on tactical deployment and strategic decision-making. By analyzing the characteristics of the battlefield geological environment in the main battle areas, we explored the impact of the geological conditions of the Songshan battlefield on battlefield selection, fortification construction, tactical moves, and strategic planning. The case studies show that geological factors play a key role in the battle, not only affecting battlefield selection and fortification construction, but also having a far-reaching impact on tactical maneuvers and strategic planning, providing an empirical basis for the study of military geology in the battlefield of Songshan, and offering a new research idea for the application of geology in modern warfare.