"An Unjust War: Letters of a Spaniard" is a novel by the famous Spanish writer Armando Palacio Valdes, which tells the story of the conflict through the prism of the internal struggle of the characters. The deep psychological reproduction of the characters' feelings and thoughts helps the reader better understand the causes and consequences of the war. The book "Unjust War: Letters of a Spaniard" leaves an indescribable mark in the heart of everyone who has read it and remains relevant at all times.