In the first images, from left to right: the commander of the unit Major von Fellner of the 3rd Grenzer Regiment; supernatural investigator Doktor Höllewisst (obviously a nom-de-guerre, to spare his family the embarrassment of a son who trespasses into crypts and buys garlic by the bushel); and the intrepid occultist Katrina von Wellen (contributor to "The Friends of English Magic" and other thaumaturgical journals).
The remainder of the section are from the 17th Grenzer Regiment, a Transylvanian unit (from what more natural recruiting ground could the Kaiser recruit vampire hunters?): the veteran hunter Dragoş Traianescu, the sapper Stefan, and reliable soldiers Casimir and Bogdan.
(Perry figures for the grenzers, Brigade for the Viennese specialists, some conversion work done.)