 The technique involves using antenna frequencies and data-acquisition parameters to analyze what lied beneath the surface of a variety of different types of soil.This technique allows the user to analyze a wide range of land in a relatively efficient amount of time.No military headquarters of this type for this particular period had yet been excavated in the entire Eastern Empire, and the 2013 excavations uncovered defensive earthworks, a circumvolution rampart, barracks areas and artifacts including roof tiles stamped with the name of the Sixth Legion, and fragments of scale armor.