The structure is a clipped shortening of "reconnaissance," removing the ending syllables to create a faster, more tactical noun. It is used to describe a preliminary investigation or survey to gather information about enemy positions, terrain, or other strategic details before a mission. Outside of military contexts, it is also used in business, gaming, and everyday conversation to describe any fact finding mission or initial assessment of a situation. The term originated in early 20th century military jargon and became widely used during World War II.

英語での「recon」の定義と意味

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