Alte Welle

I like this enormously.  You carry your symbols through well -- I particularly like "like a rusted scar" and "carved with barbed wire".  There are sharp edges, but they're brittle.  Later in the poem you say "through your rusted scar" and I'm wondering if the repetition is a little too obtrusive -- what would you think of "through your scar-rust" or some such?

Personally I'd place a few of the line breaks differently, but that's such an individual choice I'd hesitate to suggest changes.