After his battalion is decimated during the harrowing retreat to Corunna, Richard Sharpe must lead a small group of survivors behind enemy lines to ignite a Spanish uprising against the French occupation. Sharpe, a pragmatic and battle-hardened officer, finds himself navigating the treacherous political landscape of Galicia while attempting to secure the city of Santiago de Compostela. He is forced to contend with both the overwhelming might of the French army and the internal rivalries of his Spanish allies, specifically the conflict between Major Don Blas Vivar and the Count of Mouromorto. The narrative employs a third-person limited perspective, focusing on the tactical realities of 19th-century warfare and the brutal survival conditions faced by the 95th Rifles.

This work is widely regarded as a foundational entry in the long-running series, praised for its meticulous attention to historical detail and the gritty realism of its combat sequences. Readers often highlight the author's ability to balance large-scale military maneuvers with the intimate, often cynical perspective of the protagonist. The narrative structure effectively captures the chaos of the Peninsular War, grounding the high-stakes political maneuvering in the visceral experience of the common soldier. It remains a standard-bearer for the genre, frequently cited for its authentic portrayal of the 95th Rifles and the harsh conditions of the 1809 campaign.