Complex sentence: Strategically, "Husky" achieved the goals set out for it by Allied planners; the Allies drove Axis air, land and naval forces from the island and the Mediterranean's sea lanes were opened.
Split into simpler sentences: Strategically, "Husky" achieved the goals set out for it by Allied planners. The Allies drove Axis air, land and naval forces from the island; the Mediterranean's sea lanes were opened.