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All answers having "Armed conflict" as clue:

3 Character Answers:

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TIN

WAR



4 Character Answers:

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FAWN

RAPT



5 Character Answers:

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CADDY

TINNY



6 Character Answers:

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ACTION

BATTLE

COMBAT

HOTWAR

NAPKIN



7 Character Answers:

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WARFARE



11 Character Answers:

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MATERIALISE