| 1. | Taiwan's two Dutch-built Zwaardvis class submarines took part in anti-submarine warfare exercises.
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| 2. | During World War I, unrestricted submarine warfare caused a shortage of tankers.
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| 3. | This warned Germany and Austria against intensifying the use of submarine warfare.
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| 4. | The most important shipboard advances were in the field of anti-submarine warfare.
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| 5. | The aircraft is also capable of being configured for anti-submarine warfare duties.
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| 6. | Like his German counterpart, Alfred von Tirpitz, Haus favored unrestricted submarine warfare.
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| 7. | The United States responded to unrestricted submarine warfare by severing executive order.
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| 8. | They plan to buy more anti-submarine warfare planes to strengthen Taiwan's sea defense.
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| 9. | :" We intend to begin on the first of February unrestricted submarine warfare.
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| 10. | These ships are designed for coastal patrol and inshore anti-submarine warfare.
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