He finds the hussar uniform more stylish. - It is.
Still, keeping up appearances. Unless you wish to remain incognito.
Depends when the photo was taken. Perhaps he changed after the photo was taken?
There are seahorses...
Another thought is that he has returned from a visit to a Guards Hussar detachment. There were actually two squadrons (*) of Guards Hussars billeted in Hørsholm around that time, which is very close by.
Danish lesson.
In English you only use squadron, in Danish we use three different words:
Eskadron = a cavalry squadron.
Eskadrille = an airforce squadron.
Eskadre = a navy squadron.
- I believe it's similar to French.