Complex sentence: Bosnian Serbs began fortifying the capital, Sarajevo, and other areas on 1 March and the following day the first fatalities of the war were recorded in Sarajevo and Doboj.
Split into simpler sentences: Bosnian Serbs began fortifying the capital, Sarajevo, and other areas on 1 March. On the following day, the first fatalities of the war were recorded in Sarajevo and Doboj.