Pentagram has the meaning of "victory". It is used as the rank symbol of officers (especially senior officers) in many countries. It is also often used on flags.

Pentagram has always been closely related to the worship of Venus and Venus. In ancient Greece and Babylon, the pentagram also had special symbolic significance. The pentagram is the symbol of magic and the symbol of non Jews. In the early days, the Christian Church also used the pentagram to represent the five wounds of Jesus. Later, it mostly represented pagans and Satanists.

When Pentagram is used for magic, it is usually called "Pentagram". Using positive Pentagram as magic array is white magic, while inverted Pentagram is a symbol of black magic. In the eastern civilization of China's Yin and Yang five elements, the line of five elements' mutual generation and mutual restraint happens to be the five pointed star. In Japan, the five pointed star is considered to be Abe's Platycodon seal.

Source: @tattoovixen37