Complex sentence: The military of the United States is deployed in many countries around the world, with more than 369,000 of its nearly 1.4 million active-duty troops serving outside the United States and its territories.
Split into simpler sentences: The Military of the United States is deployed in many countries around the world. The US has nearly 1.4 million active personnel, and over 369,000 of those are deployed outside the United States and its territories.