STR-26D is a universal mobile fortress STONEHENGE, deployed with a ARCHE-YMIRUS, and equipped with machine guns, ground spikes, tank traps and more, great in both offense and defense. The fortresses can be connected and formed into a complex stonehenge, so they are called STONEHENGE. In order to enhance the versatility and transformation space, the engine was installed on both sides of the armor, and the internal space can accommodate up to 6 ARCHE-YMIRUS. There are 3 common types of formations: Double Firepower, Golden Traingle,and Iron Quartet.. Because of its low cost and high compatibility, it is also widely used in civil organizations and caravans, and has a variety of derivative models.