Keep in mind that the services offer two basic ways of joining: standard enlistment, in which you sign up and get started immediately, and delayed entry, in which you can sign up but postpone joining the military for a certain period (up to a year in most cases). Individual services may also offer other options, so check with your local recruiters for the latest options.
Visit the link below to get more information about the options that are offered by the different branches.
Remember that there is a process to enlisting into the military. The link that is listed below, will provide some valuable information about the process. Know that the information is not a comprehensive piece, but meant to be used as a guide. There are eligibility requirements that need to be met and your local recruiter can provide more information on an individual basis.