The beginning of the battle and the first clashes between the Japanese and American fleets.
During the Cold War, pilots of fully armed aircraft of both major powers, their allies or satellites, met many times in the air. Most of the meetings went without conflicts, although the participants mostly ran what is called " irritating the rattlesnake with their bare feet ". If nothing else, at least they tried to take a more advantageous position over the opponent. But sometimes it turned out differently.
The aircraft test program of the technological demonstrators of the JSF program was the battle of two groups associating the largest aircraft manufacturers. The results of the tests and the final decision of the commission depended on who won the contract of the century, probably one of the last piloted attack aircraft.
Signal flags used by US Navy ships together with their brief meaning. Who knows when their knowledge may come in handy :)