Herman(n) William Platzke shows up on Ancestry on:

WWI draft reg. bn 8/14/1880 in Savanagh, GA, Route 78, wife
Mary Esther, employer-Southern Life Co....Also shows up in
WWII reg., $/25/1942, 103S. Carey St., Baltimore, Md in the
US Coast Guard, Curtis Bay, born in Danzig, age 61...Lastly
Social Security death Dec 1967 in 21122 Pasadena, Anne Arundel,MD, #212-07-1783, Issued in MD. Soundalike surnames
in Poland are Pilatzke, Pletzke, Plotzke as found in Posen/
Poznan marriage base.. Von Hohenfels drew a blank!.. Coast Guard & Soc. Sec. record($27) & Naturalization records may
shed some light!! "VIEL GLUCK !!!"Try posting on German-
Prussian boards!!