Experience of a lifetime
The best and worst times of your life.
After initial training, which can be 3 -6 months, you will move to a unit to be employed in your trade. From there the Army is what you make it. Want to work hard with professionals and accomplish tasks? You can do that, Want to put in minimum effort and whinge with a bunch of likeminded types? You can do that too. Rewards for effort are rare, but they are sweet, and reprisals for lack of effort will result in you losing the most valuable thing to a soldier, your personal time.
Individual experience may vary. See the World? Maybe. Go to war? Maybe. Get injured? Probably.
You will make the best friends, and even if you do make enemies, you have to have a begrudging respect for them, for they are like you. They signed the dotted line that said they will give up some of their rights, or even their life, to protect the rights and freedoms of others.