Hello,David and George !
Greetings from the land of the Vikings !
As the native indians said:"Long time,long see!",my friends !

There is a TV serie about this period in Denmark - the war with Prussia and Austria in 1864.
I think it will be very entertaining for you regarding your question about their armies.

https://www.imdb.com/title/tt1753353/

NB: The Civil War site in Norwegian is up - so is the sites about 7th Texas Inf,3rd Texas Cavalry and the Scandinavian Confederates.

https://www.borgerkrigen.info/

With best regards,
Roy