Charles Oman's third volume picks up the story in late 1809. Napoleon has smashed the major Spanish armies, and his brother Joseph sits on the throne in Madrid. It looks like a done deal. But the war is far from over. This book covers the period where victory slips through French fingers, not in one big battle, but through a thousand cuts.

The Story

Oman guides us through two parallel struggles. First, there's the conventional war. We see the massive, lopsided Spanish defeat at Ocaña, which should have ended Spanish resistance for good. Then, we follow the stubborn British and Portuguese army under Lord Wellington as it digs in behind the massive Lines of Torres Vedras, a defensive masterpiece that completely baffles the French. Meanwhile, the port city of Cádiz becomes a symbol of defiance, besieged by land but supplied by sea, a buzzing hive of Spanish politics and hope.

The second, and perhaps more important, story is the 'little war'. Across Spain, farmers, priests, and townsfolk turn into guerrilla fighters. They don't fight set battles; they ambush couriers, raid supply depots, and make every mile of road dangerous for the French. Oman shows how this relentless, decentralized violence bled the French army white, tying down tens of thousands of troops and turning occupation into a nightmare.

Why You Should Read It

What makes this book stick with you is its sense of scale. You get the grand strategy in Wellington's headquarters, but you also feel the gritty reality of a war fought in mountain passes and village squares. Oman doesn't just list troop movements; he explains why they mattered. You understand the frustration of French marshals who could win every battle yet control nothing outside their campfires. The real 'character' here is the Spanish people themselves, and their stubborn, costly refusal to be conquered. It’s a masterclass in how insurgencies work, written a century before the term became common.

Final Verdict

This isn't a breezy introduction. It's a deep, detailed, and utterly absorbing study for anyone who loves military history or wants to understand how empires falter. Perfect for readers who enjoyed Bernard Cornwell's Sharpe novels and want the real, complex history behind them, or for anyone fascinated by the messy, human side of war beyond the glory of the charge. Be ready for detail, but you'll be rewarded with a story of resilience that changed the fate of Europe.