1, 20TH, A, ACCESSED, ACTIVITIES, AN, AND, ARE, AREA, ARMED, ARMY, ARTILLERY, AS, AVAILABLE, BACK, BARRAGE, BATTLE, BATTLEFIELD, BOMBARDMENT, BRITISH, BW, CARRY, CEASES, CENTURY, COMBAT, CONCRETE, COULD, DATE, DUG, DUGOUT, DUGOUTS, DURING, EATING, ENDURE, EVENT, EXTENSIVELY, FAMOUS, FIRST, FOOT, FORCES, FRANCE, FRITZ, FROM, FRONT, FULLY, GERMAN, GLOBAL, GREAT, HISTORIC, HISTORICAL, HISTORY, HOLD, I, IMPORTANT, IN, INFANTRY, INFANTRYMAN, INFANTRYMEN, JERRIES, JERRY, LINE, LINED, LOCATION, MALE, MAN, MEN, MILITARY, MOUSTACHE, NO, NOTABLE, OF, ON, ONCE, ONE, OR, OTHER, OUT, PART, PHOTOGRAPH, PROTECTION, RANGE, READY, RESEARCHERS, REST, RUSH, SET, SEVERAL, SHELLING, SHOCK, SIZE, SOLDIER, SOLDIERS, STAIRS, STEEL, SUCH, THAT, THE, THEY, THOUSANDS, TO, TRENCH, TROOPS, USED, USUALLY, VIA, WAR, WARFARE, WELL-KNOWN, WERE, WESTERN, WITH, WITHSTAND, WOOD, WOODEN, WORLD, WOULD, WW1, WWI,