Facing the Flag, by Jules Verne, is an 1896 patriotic novel and is part of the Voyages Extraordinaires (Extraordinary Voyages) series.
Like The Begum’s Millions, which Verne published in 1879, it has the theme of France and the entire world threatened by a super-weapon (what would now be called a weapon of mass destruction) with the threat finally overcome through the force of French patriotism.
It can be considered one of the first books dealing with problems which were to become paramount half a century after its publication in World War II and the Cold War: brilliant scientists discovering new weapons of great destructive power, whose full utilization might literally destroy the world; the competition between superpowers to obtain overwhelming stockpiles of such weapons; and, efforts of other nations to join the nuclear club.