behind enemy lines

idiom

: in an area controlled by the enemy
a secret mission behind enemy lines

Examples of behind enemy lines in a Sentence

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Her death was at the hands of Russian forces; Troian died during an operation near Pokrovsk, after completing more than a thousand successful missions and serving from the Ukrainian Donetsk Oblast all the way behind enemy lines, in the Russian city of Kursk. Rachel Elspeth Gross, Forbes.com, 24 Aug. 2025 In theory, the ship would drop a drone behind enemy lines before defenses could react and then return to base autonomously. Christopher McFadden, Interesting Engineering, 17 Aug. 2025 The Joshua Zeman documentary follows a daring rescue led by a heroic team of zookeepers and volunteers who risked their lives to save thousands of animals trapped in a zoo behind enemy lines during the Russian invasion of Ukraine. Jill Goldsmith, Deadline, 17 Aug. 2025 In the corner of the Mosquito hangar is the body of a Horsa glider, an unpowered WWII transport aircraft that was towed into the air and used to deliver troops and weapons behind enemy lines. Cnn.com Wire Service, Mercury News, 5 Aug. 2025 See All Example Sentences for behind enemy lines

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“Behind enemy lines.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/behind%20enemy%20lines. Accessed 10 Sep. 2025.

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