Definition
When enemy forces fight each other instead of you, providing free entertainment and threat reduction without expending a single round. It's the military equivalent of watching your problems solve themselves.
Example Usage
Intel reported red on red engagement between rival militia groups, so command decided to let them soften each other up.
Origin
Derived from NATO map symbology where hostile forces are marked in red, parallel to 'blue on blue' terminology
Fun Fact
During the Syrian Civil War, U.S. forces occasionally observed red on red fighting between different groups they were both opposing, creating awkward tactical calculus.
Source: Intelligence and tactical analysis terminology
Related Terms
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See “red on red” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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