sentences:  The combination of German and Hungarian armies was designated Army Group Fretter-Pico ("Armeegruppe Fretter-Pico").The desertions of Bulgaria and Romania had opened a 650-kilometer gap in Friessner's Army Group South.As Friessner desperately struggled to reform a defensive line, news filtered through to Berlin that the Hungarian leader, Admiral Miklós Horthy was preparing to sign a separate peace with the Soviet Union.