Columbia subject headings:
Harvard subject headings:
France--History--German occupation, 1914-1918
France. Armée--History--World War, 1914-1918.
Somme, 1st Battle of the, France, 1916
Somme, 2nd Battle of the, France, 1918
World War, 1914-1918--War work--France.
Princeton subject headings:
France--History--German occupation, 1914-1918.
France. Armée--History--World War, 1914-1918.
Somme, 1st Battle of the, France, 1916.
Somme, 2nd Battle of the, France, 1918.
World War, 1914-1918--War work--France.