The book "Memoirs of the first campaigns of the Duke of Wellington in Portugal and Spain, written by an officer who took part in his army" is a valuable primary source about the events of the interrupted campaigns in which the eminent military strategist and leader took part. The author, John Fane, Earl of Westmorland, provides a unique perspective on the events and strategy of the war. In his essays, you will find descriptions of military operations, tactical calculations, analysis of strategic decisions of the Duke of Wellington, as well as celebration of the courage and military skill of the participants of these campaigns. This book will help to better understand the history and importance of the events of the war in the Pyrenees, which had a decisive influence on the military art and political landscape of 19th century Europe.