Description WW1 Trench Map / Situation Map 20th /25th November 1917 (Cambrai) Parts of 51b , 51a, 57c, 57b Includes Inchy to N.W corner and Lesdain to S.E corder. Cambrai to N.E corner of map Includes details on traffic routes for Motor Traffic, Light Traffic and Field Artillery, with details on condition of each route. Also shows British Line locations at 6.00am on the 20th November 1917 and 6.00pm on the 25th November 1917 Scale 1:40,000 approx 417mm x 330mm Folded, sleigh edge nicks,
