For the record:
Since the late 1800s, the United States has been formally grouped amongst the Great Powers, and has also become a dominant economic force. Following World War I, the U.S. grew steadily in stature as an economic and military world power. Following World War II, it emerged as one of the two dominant superpowers.
In the decades after the Second World War, the United States became a dominant global influence in economic, political, military, cultural and technological affairs. Following the collapse of the Soviet Union, it stands today as the sole global hyperpower. The power of the United States is nonetheless limited by international agreements and the realities of political, military and economic constraints.
The combined United States armed forces comprise 1.4 million active duty personnel, along with several hundred thousand each in the Reserves and the National Guard. Military conscription ended in 1973. The United States armed forces are considered to be the most powerful (of any sort) in the world and their force projection capabilities are currently maintained significantly larger than any nation or collaboration of nations.