Military use.
During the revolutionary war the two sides would capture those who were spies and almost anyone who did not agree with the military and were executed by brutal punishment (death penalty) and were hanged in public or put to death by firing squad.
The civil war had similar trails while the north and the south were fighting for independence from one another, the militaries will usually capture and imprison enemy soldiers torturing them to take information that would benefit them. During the civil war the most common type of capital punishment was execution by firing squad and this was used mainly towards spies.
During World War I the United States use the death penalty even for their own prisoners, those who violated their loyalty, and rules were giving brutal punishments and then executed.
The civil war had similar trails while the north and the south were fighting for independence from one another, the militaries will usually capture and imprison enemy soldiers torturing them to take information that would benefit them. During the civil war the most common type of capital punishment was execution by firing squad and this was used mainly towards spies.
During World War I the United States use the death penalty even for their own prisoners, those who violated their loyalty, and rules were giving brutal punishments and then executed.