The crossword solution for the term 'Summers on the Somme' is 'ETES', which stands for 'Éte', the French word for summer. The Somme is a river in northern France that was the site of a major battle during World War I. The Battle of the Somme lasted from July to November 1916 and was one of the bloodiest battles in history, with over 1 million casualties. The term 'Summers on the Somme' refers to the summers spent by soldiers fighting in this battle.