It is good to apply if you have proof, and it is good to have credits. But it should be a "pass", which will have an impact on the final comprehensive test.

Military training time can be arranged freely.

To sum up, if you really don't need to be exempted from the exam, you'd better not apply.

Because the military training in Xiamen University is a little hot and not very strict, it is also a good time to get to know your classmates during the military training.