Yamashita-type Battlefield Fortification

The Yamashita-type Battlefield Fortification, also known colloquially as an "instant bunker", is a type of prefabricated pillbox manufactured by Fugaku Engineering Systems. It is widely used by various military organisations throughout the Empire due to its low cost of construction and non-permanent nature allowing the bunker to be packed up or recycled when no longer needed in an area.

The bunker itself is constructed out of prefabricated parts which may even be deployed via drop pods from orbit, allowing defensive lines to be rapidly constructed. The instant bunker can be put together by engineering teams with proper equipment in under half an hour, or infantry units without proper construction gear within three hours.

It is largely built out of carbon nanotube-reinforced titanium, with a reinforced supercarbon structural frame. Durable plates are positioned to support each other in deflecting incoming enemy fire while still being easily taken apart by engineers. The bunker is entirely aboveground, though may be constructed partially depressed into the ground for increased protection. It is heavily designed to be used in conjunction with other fortifications such as trenches, and for prolonged conflicts are intended to be eventually replaced by proper, more permanent pillboxes.

Each bunker can accommodate up to 20 individuals comfortably, allowing them to act not just as battlefield fortifications but also as combat shelters, command centres, civilian evacuation points, storage buildings and more. Sealable weapon ports are located on all four sides with ammunition racks above them. A single hatch permits entry and exit.