The combat effectiveness of the army should integrate many factors such as soldiers' quality, weapons and equipment, logistics support, fighting methods, fighting will and so on. To sum up, China's ancient army had the strongest fighting capacity in the period of Emperor Wu of Han Dynasty. At that time, a large number of outstanding generals such as Wei Qing and Huo Qubing fought all the year round, with rich combat experience and excellent weapons and equipment. At that time, the army was generally equipped with iron weapons. More expatriates went abroad to learn the most advanced sword casting technology and logistics support: at that time, military horses were domesticated nationwide to ensure the army's combat. Mode of operation: At that time, the Han army had the most advanced operational theory, and there were long-range raids in offensive operations, similar to the beheading operations in blitzkrieg and special operations, just like the beheading operations theory in the United States, except that they used planes to complete it, and we used horses to complete it, and the defensive operations had a policy of pleading for borders. For example, 65,438,000,000 people immigrated to defend the northern part of the country. Their fighting will: I think you should have heard the saying, "Those who commit crimes against me will be punished even if they are far away." This sentence should still be our national spirit!