Philadelphia is the birthplace of a branch of the United States Military.
Philadelphia is the birthplace of the United States Marine Corps , and is also the home of many U.S. firsts , including the first library -LRB- 1731 -RRB- , first hospital -LRB- 1751 -RRB- and medical school -LRB- 1765 -RRB- , first Capital -LRB- 1777 -RRB- , first stock exchange -LRB- 1790 -RRB- , first zoo -LRB- 1874 -RRB- , and first business school -LRB- 1881 -RRB-.
The U.S. Marine Corps is one of the four armed service branches in the U.S. Department of Defense -LRB- DoD -RRB- and one of the seven uniformed services of the United States.
