WWI: The First Modern War

Watch WWI: The First Modern War full movie online Movies123. Watch WWI: The First Modern War 123movies online for free. WWI: The First Modern War 123movies: When ancient war tactics became overwhelmed by powerful new weapons like tanks, air attacks, weapons of mass destruction and submarines, a pivotal game-changing moment in history occurred. History is delving into the background of each weapon explaining the how and why they were developed, the strategy, and their ultimate effectiveness.