Rheinbote
Rheinbote is a rocket or weapon model.
Also recorded as V4.
Overview
German short range ballistic rocket.
In detail
It is associated with Nazi Germany.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Rheinbote”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1413972: Rheinbote
Consult the source