Air campaigns today are built around cooperation between many different aircraft, each performing a specific task. Stealth fighters lead the way into contested airspace, electronic warfare aircraft disrupt enemy radar, and bombers or strike fighters deliver precision weapons. Supporting aircraft provide intelligence, command and control, and the fuel needed to keep the entire operation moving.
WWII began with most naval powers still believing the battleship ruled the seas. Fleets were built around heavily armored ships with massive guns meant to destroy enemy navies in decisive surface battles. By the war's end, that thinking had changed dramatically. Aircraft carriers could strike targets hundreds of miles away, while submarines choked off supply lines across entire oceans.