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 == Use of Slang == 

 ""The Leathernecks adapted to street fighting, which was a novelty to them"" 

 Having clicked on the link I now know ""leatherneck"" is a US military slang for US Marines. I'm not sure it is a term that should be used in an article though as it's not going to be familiar to a lot of readers and makes the article sound like it is written from the US perspective."