It's been my understanding that the term Schwedendegen was slang originating towards the end of the Danish phase of the 30-year war and used during the continuations in the Swedish wars up until the end of the great Northern war as slang term for a sword to be used against the Sweds. As a "degen" for use against the Swedes". There are some literature references for this, but I will have to return with specific references when I am with my library. Until then, it is only my five cent's inputs
https://bruun-rasmussen.dk/m/lots/D6...iod%3Dall_time
The link is to the latest one I bought, of this type.
In old inventory lists they are often referred to as commissioned degen, as they were commissioned and approved for production and issuing holding the commissions specification. Feltedegen is a very broad and general term, that includes various types of swords, if my understanding, based on contemporary literature and inventory lists are correct. I been wrong before and could be wrong again....
The armory at Skokloster and the castle can be seen in this documentary in Swedish with English subtitles:
https://www.youtube.com/watch?v=xRpk4ESKum0&t=15s