Various, The New Gresham Encyclopedia. Estremoz to Felspar
“ It achieved nothing in the field, but the lessons which it taught led to the formation of the Coalition Government, with Mr. Lloyd George as Minister of Munitions. The second stage of the battle of Festubert, which began at midnight on 15th May, was more successful, the enemy's front-line trenches being captured on a front of 3000 yards; but the losses incurred in winning and holding the positions were disproportionately high. ”
