Martin Horn 
Britain, France, and the Financing of the First World War [PDF ebook] 

Horn shows that victory followed not only from the ability to arm and feed mass armies but also from the capacity to raise money. Fighting the war imposed new demands on the belligerents, extending the power of the state and forcing cooperation among allies. Given their long tradition of hostility, adapting to these new realities was a wrenching process for Britain and France. Britain financed the war not only to win but also to preserve its prewar financial dominance; France financed it to survive and to ensure that the stability of the Third Republic was not threatened.