How is declaring war differ from military action

I think declaring war means your letting the enemy know of war and military action is when the military deals with a situation

Explanation:

War = large scale conflict between two armies.

A military operation = anything involving the military, including maneuvers, fighting, disaster relief etc.

The def. of "war" isn't strictly defined. There is a necessity of it being big in magnitude/duration/scale compared to individual battles.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.