Absolutely NOT true that you can't be sent oversees right out of residency. You can and will be sent. Hardship tours, like Korea, are typically filled with recent grads who get last pick of available assignments. You can, and will be deployed to the desert right out of residency. Again because you will often get stuck with the least desirable, most frequently deployed mobility teams. The Plum assignments (the so-called "European Vacation," of Germany, UK, Italy, etc) are not filled with recent graduates because they are taken by people with higher rank, more service time, or previous hardship tour.