peacetime
Understandably, the size of the various armies has grown along with human civilization. It is estimated that nearly 28 million armed forces personnel stand at the ready globally in this present day, according to the London-based International Institute for Strategic Studies. Of course, peacetime armies would likely be smaller than wartime armies. World War II saw the most soldiers ever to be amassed…with about 70 million soldiers. Approximately 42 million of those soldiers were from the United States, the Soviet Union, Germany, and Japan. These nations armies and related services were four of the largest ever rallied to the battlefield. The largest three were the United States (12,209,000 troops in August 1945), the German Reich (12,070,000 troops in June 1944), and the Soviet Union (11,000,000 troops in June 1943). Those numbers are staggering to think about.
As is expected in a world war, many soldiers are needed. So, the World War II army of the US became the biggest army in history. Citizens of the United States are notorious for patriotism, when we have been attacked. It is like waking a sleeping giant, and we will retaliate with a vengeance. Due in part to that surge of American patriotism and also because of conscription (the state-mandated enlistment of people in a national service, 
mainly a military service), the US Army numbered 12,209,000 soldiers by the end of the war in 1945. It is little surprise that the Japanese found themselves surrendering to the United States on this day, September 2, 1945. of course, the use of the atomic bombs on Hiroshima and Nagasaki, left little doubt that the Americans not only had the atomic bomb, but we would us it. Basically, their choices were to stay in the fight and die or surrender. They chose the latter, and the rest is history.
In order to determine which of the armies were the largest in history, 24/7 Wall Street reviewed a list of military superpowers from Business Insider. These armies were ranked based on the total number of troops that were serving a country or empire at the point when the army was at its largest. Without doubt, the United States was, and remains to this day, the nation with the largest army in history. Over the years, the armed forces of the United States have been larger and smaller, depending on the need at the time, the administration 
in charge, and since the draft was discontinued, the number of people who chose to join up to serve their country and to qualify for the GI Bill so that they can get free college. No matter how they got in the service, or how long they stayed, I am very proud of all of our soldiers over the many years of this nation…and I thank them for their service. On this day, the largest army in history accepted the surrender of the Japanese, who had once had the nerve to attack us on our own soil. That was their biggest mistake ever.
