Jack Martin was a thirty-two-year-old clerk at the Admiralty when he was called up to serve in the army in September 1916. These diaries, written in secret, hidden from his colleagues and only discovered by his family after his return home, present the Great War with heartbreaking clarity, written in a voice as compelling and distinctive as Wilfred Owen or Siegfried Sassoon and all the more extraordinary given that it is not an officer's but that of a private. From his arrival in France and his participation in the Somme, through offensives at Ypres and eventual demobilisation after the Armistice, we see wartime life as it really was for the ordinary Tommy.