One of many Y.M.C.A. huts built under shell-fire 17 The first Y.M.C.A. over the German trenches on the Somme battlefield 32 The Y.M.C.A. in the orchard at Albert 33 A refuge for the refugees 48 Y.M.C.A. marquee in the shell-swept Somme area 49 Y.M.C.A. in a ruined parish hall in Flanders, June, 1916 64 Bapaume-Cambrai road, with trees all cut down by the Germans 65 The Red Triangle in the support trenches 80 'George Williams House' in the front trenches 81 A half-way house to the trenches 81 The Y.M.C.A. in a ruined warehouse. Shell-hole in floor of canteen 96 A Y.M.C.A. cellar at Ypres 97 Hut in wilderness of destruction. Cutting the ice in shell-holes for water for tea--winter, 1916-17 112 Ruined house used by Y.M.C.A., propped up by timber 113 Canadian Y.M.C.A. dug-out in a mine crater on Vimy Ridge, 1917 128 A Canadian Y.M.C.A. dug-out near Vimy Ridge 129 A great boon to British Tommy--a Y.M.C.A. well under shell-fire 144 The Cambridge dug-out 144 A refuge for the walking wounded 145 Y.M.C.A. motor kitchen behind the lines 160 Indian troops at the sign of the Red Triangle 161 A shakedown in a London hut 176 Relatives of the dangerously wounded are looked after by the Y.M.C.A. in France 176 Y.M.C.A. night motor transport 177 Y.M.C.A. in the front-line dug-outs on the Palestine Front 192 Y.M.C.A. dug-out and canteen on Palestine Front 193 The Y.M.C.A. at Basra, Mesopotamia 208 The Central Y.M.C.A., Baghdad 209 The Red Triangle in Jerusalem 224 The Hexham Abbey hut, Scheveningen, Holland 224 Salonica: winter on the Doiran Front, showing Y.M.C.A. tent 225 A welcome Y.M.C.A. in the trenches 225 Y.M.C.A. for interned prisoners of war, Leysin, Switzerland 232 CHAPTER I THE COMING OF THE RED TRIANGLE