How did the civil war tear apart some families?

The civil war, a deadly conflict that left 620,000 troops dead. One of the main reasons this war was so deadly was the fact that every death was an American casualty. The number of people who died in captivity is equivalent to the number of people that died in Vietnam war. As you can guess, the war severely damaged relationships between family members.
1. Sometimes it was brother Vs. brother on the battlefield. 
2. Other times it was son Vs. Father.
3 When people were killed, it could tear the family apart almost instantly.
4. Sometimes, the entire family would be killed.

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