The Army Boxes is a Decor introduced in the 12.0.0 update.
It appears to be 3 cuboid army boxes, one being stacked on two other boxes.
It is used to greatly reduce the duration of negative effects.
- When they are placed in the lobby, they appear multiple times in different locations.
- It may be possible that the Army Boxes (are) is used either as a defense for the military, or are used to store military weapons and gear.