For governments in power during periods of war, securing the food supply of the urban areas and the military has been one of the most important economic problems. The expansion of the armed forces and the necessity to feed them better inevitably leads to increases in the demand for foodstuffs. In the more developed economies, the more mechanized and more flexible agricultural sectors have often been capable of responding to increased demand. The pressures of an emergency situation, however, have a much more severe impact on the agrarian structures in an underdeveloped economy, often leading to decreases in the levels of production. Under these circumstances, the food supply policies of the governments will have far-reaching implications for different strata of the peasantry and for the urban classes.