The position or rank of being a cadet, or the period of training to become one.
From cadet (French cadet, younger son) + -ship (Old English suffix meaning state or condition). The term evolved in the 17th century when younger sons entered military training programs.
Cadetship became formalized during the age of European militarization—families would send younger sons to cadet academies since they couldn't inherit estates, turning military service into a path for entire social classes.
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