is the
ninja
A or was a covert agent or mercenary in feudal Japan. The functions of a ninja included reconnaissance
In military operations, reconnaissance or scouting is the exploration of an area by military forces to obtain information about enem ...
art of understanding and using
meteorology
Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did not ...
as a strategic weapon.
It allowed ninja to foresee weather changes and to use them as an advantage. By knowing nature's changes, animal behaviour, or atmospheric/astronomic signs, one could use rainy weather or a hot sunny period as strategic elements to weaken and defeat the enemy.
References
Ninjutsu skills
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