Enemy combatant is a term referring to a person who, either lawfully or unlawfully, directly engages in hostilities for an enemy state or non-state actor in an armed conflict
What you are referring too is the Gettysburg address. But perhaps maybe you haven't heard it all over.
Lincoln explains in his speech that it is the soldiers who have given their lives, and who have fought with such valor in what they believed in, that have hallowed this ground. Soldiers on both sides, as the states which turned against the union, remained as stars on the union flag.
In other words, it is not the piece of paper that hallows the ground. Not the speech or any other source or action. It is the dedication of the men who fought there that hallowed that ground
If you wish to learn more about this, I recommend going to Gettysburg Pennsylvania just as I have. The town features great restaurants and attractions and you can learn so much from the museum and a trip to the battlefield.
On the political front, Americans sought to expand their role in world affairs. World War 1 also led to the rise of the “Lost Generation.” This was a generation that had become disillusioned with the ideals and values of American consumer culture and political democracy.
“Even though life is a struggle, people must persevere.”