TESTAMENT of YOUTH. A love story that started just before the beginning of World War. It shows us the youthful hopes of young lovers, their journey to despair and back again to hope for a better day. A great film, the bonding of love and the futility and horrors of war. A story based on the memoirs by Vera Brittain.

World War, I also known as the First World War, was a global war centered in Europe that began on 28th July 1914 and lasted until 11th November 1918. The war lasted exactly four years, three months and 14 days. Before World War II began in 1939, World War I was called the Great War, the World War or the War to End all Wars. 135 countries took part in World War I, and more than 15 million people died. 

World War 1 was a military conflict which involved nearly all the biggest powers of the world. It involved two opposing alliances – the Allies and the Central Powers. The countries of the Allies included Russia, France, British Empire, Italy, United States, Japan, Rumania, Serbia, Belgium, Greece, Portugal and Montenegro. The countries of the Central Powers included Germany, Austria-Hungary, Turkey and Bulgaria.
(Source: https://kidskonnect.com/history/world-war-i/)