Syndemic
The worst of the 20th century influenza pandemics was the 1918 pandemic, where between 20-40 percent of the world’s population became ill between 40-100 million people died. More people died of the so-called Spanish flu (caused by the H1N1 viral strain) pandemic in the single year of 1918 than during all four-years of the Black Death. The pandemic had devastating effects as disease spread along trade and shipping routes and other corridors of human movement until it had circled the globe. InIndia, the mortality rate reached 50 per 1,000 population. Arriving during the closing phase of the World War I, the pandemic impacted mobilized national armies. Half of U.S. soldiers who died in the "Great War," for example, were victims of influenza. It is estimated that almost ¾ of a million Americans died during the pandemic. In part, the death toll during the pandemic was caused by viral pneumonia characterized by extensive bleeding in the lungs resulting in suffocation. Many victims died within 48 hours of the appearance of the first symptom. It was not uncommon for people who appeared to be quite healthy in the morning to have died by sunset. Among those who survived the first several days, however, many died of secondary bacterial pneumonia. It has been argued that countless numbers of those who expired quickly from the disease were co-infected with tuberculosis, which would explain the notable plummet in TB cases after 1918.
African military systems after 1900
Unlike the African troops of Britain, who saw very little action on European battfields during World War I or World War II, France deployed hundreds of thousands of African fighting men to aid its cause, including some 300,000 North Africans, some 250,000 West Africans and thousands more from other regions. Over 140,000 African soldiers for example, fought on the Western Front during World War I and thousands of others fought at Gallipoli and in the Balkans. French West African troops fought and died in all the major battles of the Western Front, from Verdun (where they were instrumental in recapturing a fort) to the Armistice. Some writers (Lunn 1999) argue that towards the end of World War I, the black soldiers were increasingly been used as shock troops, and were absorbing three times as many casualties as white French troops. The French did offer such incentives as citizenship for those who fought, and French leader Clemeanceau pushed for continued recruitment of West Africans to fight for France, maintaining that it was better blacks were killed than long-suffering white Frenchmen. One in five West African combat soldiers who fought in World War I died in the war, compared to less than 17% for the French. Colonial troops such as Indian regiments in British employ suffered less.