There are different requirements for different roles. There will be some requirements that will be applicable on all. However, there are going to be many specific issues related to your role in the case. It can be that of a witness, an attorney or a defendant. You must know what is expected of you and act as per those requirements.
You will need to read the uniform code of Military Justice. This will give you a glimpse of how the whole process works and what is expected of you as a part of the process. Try to read all of it. If that is not possible, do read the parts that are directly related to you. This is very important.
Reading it without understanding will not do you much good. You must understand what you have read. This understanding will be important during the whole process. You must not only understand the code from your own perspective but those from others as well. This will help you in understanding what is required of others and can be helpful if there is some incorrect action from the other party.
Now that you have read and understood the code, you must comply with it in a court of law. This is the purpose for which you went through the whole process and if you are able to do this right, the exercise will be completely worthwhile. It is important that you develop a good understanding of the process and continue to learn as you move forward in the proceedings.