Military cadres at or above the deputy battalion level (including the deputy battalion level) have been approved by the political department at or above the division level (including the division level) of their units, and some majors have relevant work experience required by operational command.
A few years ago, graduate students were recruited, but in recent years, the threshold has gradually increased.
The position of the National Defense University in the army is equivalent to that of the Central Party School in the Party. Senior officers must go to national defense university for further study before promotion, and postgraduate education is not their focus.