This paper model is an Illuminate Armored Command Unit (ACU), the staple command vehicle for a Illuminate commander throughout the Infinite War, based on the real-time strategy (RTS) video game Supreme Commander 2, the papercraft is created by Square Enix.
Thalia Kael was the only known character to use one during the aftermath of the war.
The ACU plays as an important role during combat. Building structures quickly and, when fully upgraded, can be a formidable weapon if used correctly.
ACUs are also very important to protect, the destruction of one, causes a nuclear explosion. So despite its resilency, the commander should always make sure the ACU is well protected. But if core dump is researched, the threat of a nuclear detonation is averted.
You can download the papercraft model here: Supreme Commander 2 - Illuminate Armored Command Unit Free Paper Model Download