The Battle of the Metaxas Line (German: Kampf um die Metaxas-Linie), also known in Greece as the Battle of the Forts (Greek: Μάχη των Οχυρών), was the first battle during the German invasion of Greece in World War II. The Germans succeeded in capturing several individual forts but failed to breach the fortified Metaxas Line in general. The 2nd Panzer division (XVIII Mountain Corps) with an enveloping move crossed the Yugoslavian borders, overcame Yugoslav and Greek resistance and captured Thessaloniki on the 9th of April. The capture of Thessaloniki forced the Greek East Macedonia Army Section to surrender on the 10th of April and the Metaxas Line battle was over.