The story is set against the backdrop of the Peninsular War, which took place from 1808 to 1814 during the Napoleonic Wars. The protagonist, likely a young adventurer, becomes involved in the conflict, serving under the command of the renowned British military leader, the Duke of Wellington.G. A. Henty was known for his meticulously researched historical novels, providing young readers with exciting tales set in various historical periods. These novels often aimed to educate readers about history while offering a thrilling adventure story.In "Under Wellington's Command," readers can expect a blend of historical accuracy, action, and character development as the protagonist navigates the challenges of war and contributes to the British efforts against Napoleon's forces in the Iberian Peninsula.