Who led the forces that achieved a decisive victory at the Battle of New Orleans?

The decisive victory at the Battle of New Orleans in January 1815 was led by General Andrew Jackson. Jackson's leadership was instrumental in assembling a diverse force consisting of regular soldiers, militia, free African Americans, and pirates, which was critical in repelling the British assault. His strategic use of the terrain, effective placement of artillery, and the ability to inspire his troops all contributed to the overwhelming success of the American forces.

This battle took place after the Treaty of Ghent had been signed, ending the War of 1812, but news of the treaty had not yet reached the United States. The victory significantly boosted national morale and solidified Jackson's reputation as a national hero, paving the way for his future political career.

In contrast, the other choices represent individuals who do not relate to the Battle of New Orleans or its context. Maj Gregory Boyington was a Marine Corps aviator known for his service in World War II, BGen Margaret Brewer was the first female general officer in the Marine Corps, serving long after the War of 1812, and CWO Annie Grimes was an influential figure but not associated with this specific historical event.