8. TurkeyThe Turkish Army dates back more than 2,000 years. The modern day Turkish Army is one of the few notable armies that stayed neutral during World War II.
Although the Turkish Army was involved in the Korean War, the largest conflict in the 1900s was in the Turkish Independence War where it fought Russia, Britain, Greece, France and Italy along its borders.
Military service in Turkey is required with few exceptions and it has resulted in Turkey having the second largest ground force in NATO.