When did people know there was going to be a war in 1914?

In 1914, tensions in Europe had been escalating for years due to militarism, alliances, Imperialism, and nationalism. The assassination of Archduke Franz Ferdinand of Austria-Hungary on June 28, 1914, acted as a catalyst, leading to a series of diplomatic crises. By late July, it became clear that the situation was deteriorating rapidly, with countries mobilizing their forces and declaring war by early August, signaling that a large-scale conflict was imminent.