Another acquisition, I found a reference to this in a very interesting modern book about the Finckensteins (thanks Maria!); 1813/14 Tagebuchblätter eines Feldgeistlichen.
It contains a collection of letters and diary entries of an army chaplain during the Freiheitskrieg/Befreiungskrieg of 1813/1814.
I’ve yet to read it but on the back of the title page is a nice dedication from 1917:
I hope that little Theo and his aunt Emma got through the war OK…