Strictly speaking they're both correct - "fight" is a verb in the first sentence, and "fighting" is a gerund in the second sentence.
"We are not here to fight" sounds much more natural though.
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We are not here to fight .
2016年5月4日
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We are not here to fight.
2016年5月4日
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let me answer : i think the correct one is "we are not here for fighting" because this sentence stressed to describe current/present continouse