As a result of these sub-cases, the main remaining German armed forces on the ground (with the exception of those filled in the islands and fortified ports) were the Eastern German Mark Military Group, which faced Soviet forces in eastern Austria and western Bohemia; Group E against Yugoslav forces in Croatia; the remains of the Vistula Group facing Soviet forces in Mecklenburg; and the military center against Soviet forces in East Bohemia and Moravia. [15] From May 5, the Mitte military group also participated in the brutal suppression of the Prague uprising. .