No nudity. Sex is implied on several occasions, but always fades to black.

No "over the top" brutality, but as the series is set during the second World War and specifically about commando raids, there is fighting, blood, and so on.

Plenty of "mild" swear words, in multiple languages, usually limited to "Faen" (Damn) and the like.

In the era this is set in (primarily 1940's), "everybody" smoked. There are also many scenes with alcohol, often in a festive setting.