The document provides background on Alfred, Lord Tennyson's poem "The Charge of the Light Brigade". It discusses the Battle of Balaclava in 1854 during the Crimean War where over half of the British Light Brigade soldiers were killed after being ordered into a valley surrounded by the Russian Army. The poem narrates the story of the 600 English horsemen who courageously charged into battle with no chance of survival, praising their bravery and obedience in following the order despite knowing it was a suicide mission.