Complex sentence: During the Yom Kippur War, Egyptian forces successfully breached the Bar Lev Line in less than two hours at a cost of more than a thousand dead and some 5,000 wounded.
Split into simpler sentences: During the Yom Kippur War, Egyptian forces successfully breached the Bar Lev Line in less than two hours. At a cost of more than a thousand dead and some 5,000 wounded.