Rothschild houses had capital in excess of PS35 million on the eve of the First World War, all of it family money; it was the job of the partners to manage this huge portfolio. A large part of it they held in the form of European government bonds, the most secure form of investment and also the kind of security the Rothschilds knew best, since they had long been the principal underwriters for new bond issues on the London market. They, more than anyone, stood to lose in the event of a European war, not least because such a war would almost certainly divide the three houses, pitting Paris and perhaps also London against Vienna. Yet the outbreak of war caught them almost entirely by surprise.