What are the conditions of the trenches

wet, dirty, smelly, rats running around and trench foot. The reason why is because they didnt build the trenches properly due to so little time.

c) troops march forward in close formation against newer, more accurate weapons

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.