WWI bore the introduction of tanks, machine guns, chemical warfare, airplanes and trenches used in war. These were used in WWI unlike any war before it. The most noticeable being chemicals, tanks, airplanes and machine guns.
The war on terrorism is different because there's NO armies, navies, air forces, uniforms, nor government involved; just criminals verses governmental forces.
The war on poverty was not a military engagement- it refers to the new federal programs designed to combat poverty under the Lyndon Johnson administration. I can't think of any previous programs of...