Yes, as a recruit you must attened Recruit Training, which will give you the basic understand of how we operate. Once you complete recruit training, you will be made a PV1, where you will need to move on, to either OSUT (4 classes over 2 weeks) for standard 11B Infantry billets, or CMS (2 classes) for medical billets. Someone with better knowlegde of our aviation detachments could fill you in more on the training pipeline for them.
Keep in mind that there are limited slots for several billets, including Medics and Aviation, and you may or may not be able to hold one of those billets out of training.
I hope that helps a little. Feel free to ask any other questions you have.