Your recruiter will give you a list of the documents needed to process for the military, the sooner you start gathering the documents the sooner you can join the military. The list may include a government issued ID (Drivers License), social security card, high school diploma, birth certificate, college transcripts, marriage license, medical documents, court documents, adoption documents, these are just some examples of the documents you may be asked to bring. If you are unable to locate the documents, you may need extra time to order the necessary replacement documents. An early start will make the process of joining much smoother.