Columbia subject headings:
Germany. Heer--Chaplains--History--20th century.
Military chaplains--Catholic Church--History--20th century.
Military chaplains--Germany--History--20th century.
World War, 1914-1918--Chaplains--Germany.
World War, 1914-1918--Personal narratives, German.
Harvard subject headings:
Germany. Heer--Biography.
Kreutz, Benedict, 1879-1949--Diaries.
World War, 1914-1918--Chaplains--Germany--Diaries.
World War, 1914-1918--Personal narratives, German
World War, 1914-1918--Religious aspects
Princeton subject headings:
Germany. Heer--Biography.
Kreutz, Benedict, 1879-1949--Diaries.
World War, 1914-1918--Chaplains--Germany--Diaries.
World War, 1914-1918--Personal narratives, German.
World War, 1914-1918--Religious aspects.