Which U.S. President, nicknamed 'Old Hickory', was the only president to have served in both the Revolutionary War and the War of 1812?

1. He was known for his populist policies and strong stance against the national bank.
2. He was a military hero, particularly famous for his victory at the Battle of New Orleans.
3. His presidency saw the forced relocation of Native Americans known as the Trail of Tears.
4. He was the seventh president of the United States.