Columbia subject headings:
World War, 1914-1918--Campaigns--Western Front.
World War, 1914-1918--Journalism, Military--Western Front.
World War, 1914-1918--Trench warfare.
Harvard subject headings:
Wipers times.
World War, 1914-1918--Campaigns--Western Front
World War, 1914-1918--Journalism, Military--Western Front.
World War, 1914-1918--Trench warfare
Princeton subject headings:
Great Britain. Army. Infantry.
Wipers times.
World War, 1914-1918--Campaigns--Western Front.
World War, 1914-1918--Journalism, Military--Western Front.
World War, 1914-1918--Trench warfare.