How to distinguish the meanings of war, campaign and battle?

War is an armed struggle between social groups for certain political and economic purposes. A social state or world or regional situation corresponding to peace. The highest form of struggle used to solve contradictions among nations, countries, political groups, different classes and religious factions. Special forms of political expression. China's ancient books called war struggle, war, conquest, conquest and soldiers. The word "war" has been used in the Warring States period's art book Woods. There are different views on war and its causes in history. Naturalist war scholars believe that the root of war lies in the natural environment and human biological nature, and war is a natural and eternal phenomenon. Religious war disputants believe that war is God's punishment for people, and use supernatural power to explain the causes of war. Racists believe that the cause of war is the difference between superior and inferior nations. Modern geopolitical scholars believe that war is based on geographical environment, that is, it is triggered by the struggle for certain living space and natural resources. Malthusians believe that overpopulation and hunger are the real causes of war. Historical materialism holds that war has never happened and is not eternal. War is the product of the development of social productive forces and relations of production to a certain stage, and it only appeared after the emergence of private ownership, the formation of classes and countries, and the emergence of oppression and oppression. There are various types of wars in history, including wars of aggression and wars of self-defense; Just war and unjust war include traditional war and modern war; Local wars and world wars and other types of wars. The root causes of war are political, economic, social and cultural factors. There are also many ways to describe the state of war, and modern countries mainly describe war from the perspective of law. People think that war is a special legal relationship between belligerents. This state of war usually goes through certain legal procedures and is accompanied by a series of legal consequences. The state of war is a legal state, which is often a declaration of war by two warring parties or one side, but there is not necessarily an actual war conflict between them. A state of war is usually declared by the highest organ of state power. Once the belligerents entered a state of war, the relationship between them changed from peace to war, and the laws of war began to apply. The description of war can be discussed not only from the legal point of view, but also from the military and political point of view. Battle is a series of combat actions carried out by the legion under unified command to achieve the partial or overall purpose of the war. This is between war and battle. According to the basic types of operations, it is divided into offensive campaigns and defensive campaigns; According to the composition of campaign forces and their relationship, it is divided into contract campaigns and joint campaigns; According to the scale, it is divided into group army campaign, front-line army (group army) campaign and theater campaign. According to the services and arms, it can be divided into army campaign, navy campaign, air force campaign and second artillery campaign. Fighting is an organized combat action carried out by corps or troops or detachments in a short time and in a small space. It is divided into offensive operations and defensive operations. Can be carried out in the campaign, can also be carried out alone. It can be seen that war, campaign and battle are closely related, but there are differences. Their similarities are all about military operations, involving troops, weapons, officers and men, etc. Their differences are as follows: first, the scale is different; Second, the effect is different; Third, the impact is different. Dedicated to all friends who care about the military!