The first World War begins in 1914. Trench warfare keeps both sides almost at a stalemate until the United States enters the war in 1917. The development of a fighting air force, tanks and mustard gas changes the technology of mortal combat. After the war ends in 1918, the world order begins to change. Many countries are left in total economic ruin and revolution is on the minds of many. Mecklenburg County plays a role in the war when a training facility, Camp Greene, is constructed to prepare American soldiers for combat.