In the army, you can't get into a military school without taking a math test. Taking military examinations usually requires a series of examinations and selections, including some basic subjects, such as mathematics, Chinese and foreign languages. Mathematics is usually one of the compulsory subjects, because it has an important application and basic role in the army. As a discipline, mathematics can cultivate people's logical thinking ability, reasoning ability and problem-solving ability, which are all necessary abilities in military work. Moreover, the basic knowledge of mathematics is also widely used in some military disciplines, such as missiles, radar, tactics and so on. So mathematics is usually part of the military school exam. However, the specific regulations may be different due to different countries, armies and enrollment policies. Regarding the specific requirements and application process of the military academy entrance examination, I suggest you consult the relevant enrollment institutions or military academy enrollment departments to obtain accurate and up-to-date information.