July - August 1914

E1

September - October 1914

E2

October - December 1914

E3

December 1914 - June 1915

E4

June - September 1915

E5

December 1915 - October 1916

E6

October 1916 - April 1917

E7

April 1917 - November 1917

E8

December 1917 - June 1918

E9

July - September 1918

E10