George Washington was born on February 22, 1732, at his family's Pope's Creek Estate near present-day Colonial Beach in Westmoreland County, Virginia. Washington was commissioned a Major in the Virginia Militia in 1752. During the French and Indian War, he was taken as a Prisoner of War briefly, making him the first U.S. President to have been held as a POW. Washington resigned from active military service in 1758. Shortly after the start of the American Revolutionary War, the Second Continental Congress appointed Washington Commander-in-Chief of the Continental Army with rank of Major General on June 15, 1775. He led the American forces to victory over the British, which allowed the United States to keep its independence. He resigned his commmission on December 23, 1783, and was elected President of the Constitutional Convention in 1787. The electoral college elected George Washington the first President of the United States unanimously in 1789 and again in the 1792 election. He remains the only President in history to receive 100 percent of electoral votes. On July 13, 1798, President John Adams appointed Washington a Lieutenant General and Commander-in-Chief of all United States Armies. He held the position of senior officer of the United States Army until his death on December 14, 1799. On July 4, 1976, George Washington was posthumously promoted to the rank of General of the Armies of the United States, making him forever the highest ranking person in U.S. Military History. He was buried at Mount Vernon, and his wife, First Lady Martha Washington (1731-1802) is buried there with him. Four United States Navy Ships have been named after George Washington: the sloop USS George Washington (1798-1802); the captured German ocean liner USS George Washington (ID-3018, 1917-1947); the nuclear ballistic missile submarine USS George Washington (SSBN-598, 1959-1985); and the nuclear aircraft carrier USS George Washington (CVN-73, 1992-Present).