During the Russian campaign of 1812 the Russians retreated while destroying infrastructure and agriculture in order to effectively hamper the French and strip them of adequate supplies. In the campaign of 1813, Allied forces in the German theater alone amounted to nearly one million whilst two years later in the Hundred Days a French decree called for the total mobilization of some 2.5 million men (though at most a fifth of this was managed by the time of the French defeat at Waterloo). During the prolonged Peninsular War from 1808 to 1814 some 300,000 French troops were kept permanently occupied by, in addition to several hundred thousand Spanish, Portuguese and British regulars, an enormous and sustained guerrilla insurgency—ultimately French deaths would amount to 300,000 in the Peninsular War alone.