Gfr. Sigismund Blaschkowski, German Army, 20/08/24-08/06/44 - Gosport

A mate has become intrigued by one Sigismund Blaschkowski's grave at Gosport Anns Hill Cemetery.

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He is on Volksbund:
Detailansicht

& CWGC:
Casualty

Along with a tad more here:
War Graves Page 2 (BE-BZ) - Gosport Hampshire UK Info

I know German casualties can be hard to pin down further (one of very few I've ever got even a plain result from Volksbund with), but is there any way to find a bit more? Unit, place of capture/first treatment etc.?

Theorising he's a DDay casualty, and also now quite interested in how enemy casualties were processed.
Only recently looking at a chap on Twatter's pics of Allied blokes being brought back at Stokes Bay. Presumably Sigismund came over via a similar route.

Anyway, cheers in advance from myself & matey if anyone can help with more.