7797th Signal Group, Hanau (Source: Jerry Dorcas/US Army photo) Lt. General Lucius D. Clay (center of picture, holding a cup of coffee) and Maj. General Jerry V. Matejka (on the far left) in the mess hall at Hanau Signal Depot during an official visit by General Clay. Albert Dorcas can be seen standing near a column in the back on the right. (MG Matejka was the EUCOM Chief Signal Officer at the time and would soon be named the CG of EUCOM Rear in Heidelberg.)