The reliance could be seen on how we acquire our military draft.
For example, countries such as Russia and south Korea implemented a mandatory military services for all adult men. (they're require to served at the military for around 1-2 years).
United states on the other hand, does not implement such mandatory military draft. All of our forces were acquired through voluntary methods without government force.
Since the nature of war has changed, voluntary method is more than enough since war that conducted on modern time would most likely relied on mass destruction weapons or advanced vehicles.
The astrolabe was basically a map of the stars, you could use it to navigate by connecting what stars you see and what stars are on the astrolabe. It was also important for religious groups that built their religion off the stars!
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Well, Hitler was the Nazi leader of Germany during World War II, and Stalin was the Communist leader of the Soviet Union during World War II. Though both men were harsh dictators, the ideologies they functioned under were different.
