Black Flag; Patriot; will not surrender;
In general, black flags are used by enemy forces to signify that enemy combatants are going to be killed rather than taken prisoner—essentially, the opposite of the white flag used to represent surrender. This is also sometimes referred to as “give no quarter.”
Most black American flags are entirely black, meaning that stars and stripes become almost impossible to see. For this reason, you may also see them on military fatigues, so that soldiers can show respect for their country without drawing attention to themselves with bright colors.