Artillery-- bombardments by, 43, 57, 58, 63, 67, 76, 88, 109, 136, 146, 168, 171, 260. camouflage screens for, 145, 180. co-operation between infantry and, 33, 163, 260, 261, 274, 290, 294. divisional, _see_ Divisional. French, withdrawal of, 263. German, 27, 51, 102. horses of, 46. reorganisation of, 47, 89. Arvillers, 252, 253, 254. Ash, Major R. V. C., 204, 255. Ashwell, Captain T. G. L., 171, 189. Attacks-- bombing, 38, 39, 40, 48, 97, 114, 127, 162, 171, 208. feint, 17, 25, 26, 27. gas, 29, 33, 48, 49, 54, 89, 193, 220, 266, 275, 278, 289. night, 55, 56, 57, 58, 115, 127, 141, 155, 190, 214, 280, 283, 284, 289, 291, 295. surprise, 133, 134, 179, 180, 181, 281, 282. Aubers, 12. Aubers-Radinghem Ridge, 16. Aubigny, 268. Au Bon Gite, 151, 153, 154, 155, 157, 158, 159, 168. Austin, 2nd Lieut. C. E., 287. Australian Forces, 59, 63, 110, 120, 122, 124, 133, 139, 214, 260, 265, 268. Avesne, 237, 304. Avion, 272, 273, 276, 282, 292. ---- Sector, 272, 273, 278, 279, 280, 285, 287, 292. Avricourt, 247. “B” post, 117, 118. Bailleul, 7, 59, 271. Balfour, Major, 176. Balston, Lieut.-Col., 220, 265, 267. Banbury, Brig.-Gen. W. E., 61, 74, 91, 93, 105, 126, 182, 192, 219. Banks, 2nd. Lieut., 245. Banteux, 181, 185, 186. Bapaume, 123, 139, 173, 178, 284. Barastre, 124. Bareilly Brigade, 16, 18, 19, 20. Barker, Private, 197. Barrages, 76, 102, 104, 148, 157, 168, 170, 171, 214, 254, 261, 277, 280, 284, 287, 290, 291, 303. Barrow, Private C., 92. Bas Maisnil, 16, 18. Bavai, 303, 304. Baylay, Brig.-Gen. A. C., 276, 285. Bazentin-le-Grand, 66. ---- ---- Petit, 66. Beaucamp, 134, 136, 138, 178, 205, 206, 208. Beaucourt, 118. Beaufort, 251, 252, 253. Beaulencourt, 99, 101, 123. Beaulieu, 218, 264. Beaumont, 243, 244. ---- Hamel, 61, 63, 65, 118. Beaurevoir, 189, 190. Beauval, 64. Beauvraignes, 256. Beddington, Captain, 50. ---- Lieut.-Col. C., 34. Bee, Sergeant W., 134. Beines, 243, 244, 246. Belcher, Major P., 278. Belgian Forces, 288. Bellewarde Farm, 15. Belloy-sur-Somme, 110. Bell-Smythe, Brig.-Gen., 261. Berlancourt, 264. Bernafay Wood, 65, 73, 74, 77, 80, 83, 85, 94, 98. Bernaville, 142. Bertie, Major the Hon. A. M., 131, 229. Bertincourt, 124, 125, 129, 133. Béthencourt, 222, 225, 227, 228, 231. Bettrechies, 303. Bidwell, Lieut., 155. Bilhem, 135, 136, 137, 139, 178. Billancourt, 234, 248. Bilton, Lieut.-Col., 227. Bixschoete, 143. Blackdown, 3, 4. Blacklock, Lieut.-Col. C. A., 55, 73, 76. Blangy Tronville, 267. Blaringhem, 210. Blarnighem Château, 35. Blockhouses, concrete, 151, 159.