You can't. If you don't apply for the start of college, the school will return your file. At that time, the only thing you can do is to go back for a second interview and take the exam next year. Even if you may be late for registration for some reason, you should contact the relevant departments of the school in advance. As for military training, it also counts as credits. If you don't participate in military training without justifiable reasons, you won't get military training credits and you can't graduate at all.