How Can I Retrieve My Army Box?

Army Box Retrieval

It's worth noting that this is very similar to a pledge.

You can withdraw the Army Boxes before opening them but you have to take note that you will not be able to utilize them to gain the Alpha Float Crystal after withdrawal. Log in to your account, choose the inventory, and then click "redeem." Use the slider to determine the amount you want to withdraw, then click "confirm." You may be asked to re-enter your password if it takes too long. After a few seconds, your Army Box will appear in your wallet.