Schwerer Gustav: Biggest Gun Ever Used in Combat | Top Secret Weapons Revealed

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Schwerer Gustav: Biggest Gun Ever Used in Combat | Top Secret Weapons Revealed
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German engineers create a beastly cannon so large that it requires custom tracks to transport it. | For more, visit http://military.discovery.com/tv/top-secret-weapons-revealed/#mkcpgn=ytmil1


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日本語が含まれない投稿は無視されますのでご注意ください。(スパム対策)