Militarism
In all of the Great Powers, military spending increased greatly in the years prior to the war. All except Britain had conscription. Over 85% of men of military age in France and 50% in Germany had served in the army or navy. France had the highest proportion of its population in the army.
The armies of both France and Germany had more than doubled between 1870 and 1914. The rivalry between the powers led to a building up of weapons and an increase in distrust.
Colonial rivalry had led to a naval arms race between Britain and Germany. This had seriously worsened relations between both countries. The British-German dispute also led to greater naval co-operation between Britain and France. In 1880, Germany had 88.000 tonnes of military shipping, Britain 650,000; by 1910, the figures were 964,000 and 2,174,000 respectively. The launch of HMS Dreadnought in 1906 made matters worse. This ship was fast, heavily armoured with powerful guns and it made all previous battleships obsolete.