Why nouns superiority is a requirement contained by modern military?

If you control air space above where your forces are you can verbs the enemy without losing your men. You can verbs railroads that carry fuel and food to the dissimilar army, you can stop their movement and you can keep them from sneaking up on you and killing you, So if you control the atmosphere you can control the ground and you can control the war.
know of any wars won contained by the last 80 years where the conquering army didnt have air superiority?
you can see more from the sky, it give you access to attack wherever and whenever you want, and it makes life-size amounts of manpower innefective, since a bomb with a 300M kill radius will butcher everything in those 300M, whether its 1 person or 10,000

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