This isn’t so much a technical error as it is a translation error, but I figured this was the only way for it to get possibly fixed. I have been teaching myself German for the past several years, and as a test of my skills I’ve been playing MCC in German. Humorously, I’ve discovered that there was an error in the translation. The ODST customization screen mistakenly translates Dutch’s helmet as “Niederländischer Helm”, meaning “Dutch Helmet” or “Helmet from the Netherlands”. This should be relatively easy to fix, simply changing the name of the customization option to “Dutch-Helm Ein/Aus” will fix the error.
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I can confirm the translation error. I’m a native speaker.