Im not sure how you can say that freedom of speech and right to bear arms are part of the core of the idea of America.
Yes, we began fighting when they tried to take away our ability to defend ourselves, correct.
The right to bear arms is not the right to be drafted. It is the right to defend oneself.
Soldiers in war kill to protect others.
The bible heavily influenced the founding fathers. Ideas such as inalienable rights, human dignity, equality before God, and God's law for example. George Washington was a christian, Franklin was deist, Hamilton was also a Christian.