Question: What unsuccessful 1945 attack involved German ships. the RAF, and Focke-Wulf fighters?
Sentence (from "Black Friday (1945)"): On 9 February 1945, a force of Allied Bristol Beaufighter aircraft suffered heavy casualties during an unsuccessful attack on the German destroyer "Z33" and its escorting vessels; the operation was labelled "Black Friday" by the surviving Allied aircrew.
Relevant evidence: Yes