Explain Why I Want To Honor The Civil War

One reason there are wars is when two countries are at a disagreement, like in the civil war the south and the north were having disagreements about slaves. Other times it´s about an offence like if some Korean soldier came over and shot 30 people we would probably declare war on Korea. Sometimes it´s when we get forced into a war, like when Japan bombed Pearl harbor they forced us to defend our country.
This veterans day I would like to honor my great grand father and mother who were both in the army, one as a navy seal, one as a nurse.