Final answer:
During the War of 1812, Andrew Jackson's soldiers nicknamed him "Old Hickory" due to his toughness and resilience. He displayed bravery by leading his troops back to Tennessee against orders.
Step-by-step explanation:
During the War of 1812, Andrew Jackson's soldiers nicknamed him "Old Hickory".This nickname reflects both Jackson's strength and resilience as a military leader. The moniker "Old Hickory" was a testament to his stern and unyielding personality, as well as his reputation for being a strict and determined commander. Jackson earned widespread admiration and respect from his troops for his leadership during the Battle of New Orleans in 1815, where he achieved a significant victory against the British forces. The nickname stuck with Jackson throughout his military and political career, and he later became the seventh President of the United States. The toughness and decisiveness associated with the nickname "Old Hickory" symbolize the enduring legacy of Jackson's leadership during a pivotal period in American history.