Complex sentence: When the city of Safad was finally attacked on 10 to 11 May 1948, morale in the village was low and shortly aftererwards many fled according to an Israeli intelligence report on 14 May shortly before advancing Israeli troops entered.
Split into simpler sentences: When the city of Safad was finally attacked on 10 to 11 May 1948, morale in the village was low and many had already fled. According to an Israeli intelligence report, many residents left on 14 May shortly before Israeli troops entered.