Also, I think that a honest reading of that chart would be that there is the Vietnam War (with very low justification), WW2 (with high justification) and then two subgroups: WW1 & Civil War with moderate justification, and Korea, Gulf War 1 and Afghanistan with lower levels, but still significant levels of justification.
For instance, I joined and served in the military during the second Iraq war despite disapproving of the invasion.
This holds especially for career civil servants, as political winds shift and one may not always agree with the policies of the current government.
One does not serve because the nation is perfect, one serves to strengthen the nation and to have the opportunity to make it better for future generations.
And after your experiences would you recommend the same path to your children if they were thinking of doing the same?
https://fivethirtyeight.com/features/most-americans-agree-th...