"The army and the people unite as one, see who can be the enemy in the world" is a classic poster, which expresses the strong will of the army and the people to unite and the pursuit of national security and people's happiness. This poster usually takes the unity of PLA soldiers and the masses as the theme, and conveys the message of unity and common struggle between the army and the people.

In this poster, we can see a soldier in military uniform and an ordinary citizen holding hands. Their images are full and vivid, expressing sincere friendship and unity. Soldiers represent the armed forces of the country and the people represent the broad masses of the people. The close combination of the two means the profound friendship and close ties between the military and the people.

The slogan in the poster "Let's unite and see who can be the enemy in the world" not only expresses the strong will of military and civilian unity, but also conveys a pursuit of national security and people's happiness. This sentence means that as long as the army and the people unite, nothing can resist our strength. This idea emphasizes the importance of military-civilian unity and our determination to unite and work together.

This poster has important historical significance in the social background at that time. Under the leadership of the Chinese Production Party, the unity between the army and the people is one of the important factors for the victory of the revolution. This poster conveys the importance of military-civilian unity to the broad masses of the people through visual images and slogans, and encourages people to actively participate in the revolutionary cause and strive for national security and people's happiness.

Today, this poster still has important practical significance. In maintaining national security and promoting social harmony, military-civilian unity remains an indispensable force for us. Only when the broad masses of the people and army soldiers unite can we overcome all kinds of difficulties and challenges and realize the prosperity of the country and the happiness and well-being of the people.

In short, the poster of "military-civilian unity is like a person trying to see who can be the enemy in the world" conveys the profound connotation of military-civilian unity and the pursuit of national security and people's happiness with its vivid pictures and infectious slogans.

This poster not only has historical value, but also has practical significance. It reminds us to cherish the friendship between the army and the people, unite as one and work together to realize the prosperity of the country and the happiness and well-being of the people.