[PAR] [TLE] British L-class submarine [SEP] The British L-class submarine was originally planned under the emergency war programme as an improved version of the British E-class submarine.  The scale of change allowed the L class to become a separate class. [PAR] [TLE] British E-class submarine [SEP] The British E class submarines started out as improved versions of the British D class submarine.  The E class served with the Royal Navy throughout World War I as the backbone of the submarine fleet.  The last surviving E class submarines were withdrawn from service by 1922.
[PAR] [TLE] British L - class submarine [ SEP ] The British L - class submarine was originally planned under the emergency war programme as an improved version of the British E - class submarine . The scale of change allowed the L class to become a separate class . [PAR] [TLE] British E - class submarine [ SEP ] The British E class submarines started out as improved versions of the British D class submarine . The E class served with the Royal Navy throughout World War I as the backbone of the submarine fleet . The last surviving E class submarines were withdrawn from service by 1922 .
The British L-class submarine is an improved version of a submarine that served throughout which war ?
The British L - class submarine is an improved version of a submarine that served throughout which war ?
World War I
World War I