In history, what is the decisive factor in winning wars with fewer victories?

The main factors for the victory of the war are time, location, people and so on.

Timing refers to seasons, changes in natural weather, and sometimes political opportunities. For example, Cao Cao's measures to rob the emperor to be a vassal are also a kind of weather, and Battle of Red Cliffs burned warships, and the east wind is a kind of climate and weather. Natural location refers to different kinds of terrain, such as grassland, flat land, mountains, rivers and so on. These largely determine the combat effectiveness of the army, for example, cavalry is suitable for grassland and flat ground operations. We can often.

Harmony is the most important thing, such as the quality of generals, the combat effectiveness of soldiers, the quality of the army, such as the strictness of military laws and the loyalty of soldiers to commanders. Only when the generals make proper decisions, occupy the right time and place, and the logistics are guaranteed in time, can the monarch's absolute trust in the marshal be an absolute victory. Such an army can turn the tide and win every victory even if it is smaller than the enemy. Of course, only from the perspective of pure war. In fact, the key to success depends to a great extent on the development of political economy. No matter how strong the army is, it is difficult to win without economic security. During the Three Kingdoms period, Wei, Wu and Shu occupied the favorable climate, geographical location and human harmony respectively. But in the end, Wei's economic and political policies are appropriate, and Jin can unify the three countries on this basis!