Complex sentence: The war, lasting under a fortnight, saw more than 45,000 Pakistani soldiers and 45,000 civilian personnel taken as POWs, and it ended with the unconditional surrender of Pakistan's eastern half, resulting in the birth of Bangladesh as a new nation.
Split into simpler sentences: The war, lasting under a fortnight, saw more than 45,000 Pakistani soldiers and 45,000 civilian personnel being taken as POWs. It ended with Pakistan's unconditional surrender of its eastern half, resulting in the birth of Bangladesh as a new nation.