Hello, here's the thing The requirement of the military academy entrance examination is no scar. The purpose is that scar can be regarded as an incompleteness of the skin, which will make the contact between the skin and the outside world different from ordinary skin and may affect you in extreme or harsh environment. For example, in the case of high air pressure, scars may cause your skin to crack. Extreme cold can also affect scars. Birthmark is a complete skin, but the scar on your forehead will have an impact on some departments of military schools, but you can still apply for military schools, where there are many departments for you to choose from, and few departments need you to worry about scars. I hope it helps you.