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"By the sixth century of the common era the Roman Empire already had many hundreds of years of accumulated ceremonial embedded in its government, and practical science embodied in its army. The transition from Republic to Imperium and the more hierarchical structure that entaile…
The imperial German Army Air Service of World War I grew from just 500 men in 1914 to 80,000 in 1918, inventing in the process a wholly new form of warfare. The exploits of the first fighter 'aces' have been widely celebrated, and have tended to overshadow the other, equally imp…