Douglas Haig re-introduced the term for his units of the British Expeditionary Force. This army was soon decimated at the Somme, and the term became something of a joke.
... area of 41.7 km² (16.1 mi²). 37.6 km² (14.5 mi²) of it is land and 4.1 km² (1.6 mi²) of it is water. The total area is 9.81% water. ...