Definition of British Expeditionary Force in English:
British Expeditionary Force
proper noun
A British force made available by the army reform of 1908 for service overseas. Such forces were sent to France in 1914 and 1939.
Definition of British Expeditionary Force in US English:
British Expeditionary Force
(also BEF)
proper noun
A British force made available by the army reform of 1908 for service overseas against foreign countries. Such forces were sent to France at the outbreak of both world wars.