Complex sentence: In March 1944 the German Sixth Army was threatened with encirclement from Soviet troops! 138 and 144 Mountain Infantry Regiments of the 3rd Mountain Division were ordered to hold a bridgehead on Inhulets River against Soviet counterattacks until the German forces could evacuate the area.
Split into simpler sentences: In March 1944 the German Sixth Army was threatened with encirclement by Soviet troops. The 138 th and 144 th Mountain Infantry Regiments of the 3 rd Mountain Division were ordered to hold a bridgehead on Inhulets River against Soviet counterattacks until the German forces could evacuate the area.