The War to End All Wars

"The War to End All Wars" (TV: To the Last Man, PROSE: The Way Through the Woods) or "the War to End Wars", was a term for the First World War of 1914-1918. (TV: The War Games) The Eleventh Doctor also used the term for the Last Great Time War between the Time Lords and the Daleks. (TV: The Day of the Doctor)

The Seventh Doctor recalled that, prior to the First World War, the English applied the sentiment to the English Civil War and the Napoleonic War. (PROSE: Just War)