Complex sentence: The selection of the command staff destined for the siege of Vyborg led to some surprises; the main authority was given to General-Admiral Fyodor Apraksin, and his subordinates were named as Major-Generals R. Bruce and Bergholtz.
Split into simpler sentences: The selection of the command staff destined for the siege of Vyborg led to some surprises. The main authority was given to General-Admiral Fyodor Apraksin, and his assistants were named as Major-Generals R. Bruce and Bergholtz.