Karl was a well known visitor to the front like many others from the royal family. There are many photo’s of him visiting the front. Especially from the period before he became the Austro-Hungarian Kaiser so up to 1916.
These few all come from one album of an officer in the 306th Honvéd Infantry Regiment (Honvéd Gyalóg Ézred)
And below my favorite of this small series. Karl needs a table for his map so he uses a decorated Huszar officer for this….