Boot Camp

Summary
Size 3x3

The instructors at the Boot Camp work hard to improve our troops and scrolls, making them more powerful and harder to defeat.
 * The Boot Camp is the place where players go to upgrade their army. For a single training fee of Iron, the units health, damage and cost will go up.
 * If players upgrade the Boot Camp while it is training, the training pauses until the upgrade completes.
 * Players cannot cancel the training in progress.
 * The Boot Camp should visually display the unit in training, taking part of the training process.