The First World War otherwise known as The Great war was the First of two global wars. WW1 was fought between the year 1914 and 1918 around the world. The disastrous global war was fought between Allied Powers and Axis Powers. The First World War was often described as the great war to end all other wars. It is described as one of the deadliest wars fought in Human History. According to several estimates The Great War led to the mobilization of about 70 million military personnel around the world. The war was so catastrophic that it spread on to 3 continents involving 70 million soldiers. The estimate of loss is considered to be around 37 million casualties. The war saw the first use of technology to harm, destroy or kill enemies using poisonous gases which took a total of 91,195 deaths. The war also caused severe loss of maritime assets including 6395 ships lost in naval warfare across several seas and oceans. The monetary loss is considered to be huge as 186.3 billion dollar lost and all of these destructions had occurred in and around 31 countries. The war was started as a sudden caused by the assassination of Austro-Hungarian heir Archduke Franz Ferdinand in Sarajevo, leading to the July Crisis. In response Austria-Hungary issued an ultimatum to Serbia. By July 1914 the great powers of Europe were divided into two coalitions: The Triple Entente which consisted of France, Russia, and Britain and The Triple Alliance of Germany, Austria-Hungary, and Italy.