Can't blame the Royal Mail this time. "A Christmas card sent by one of the First World War's most heroic tank officers has been found 100 years later. Captain Elliot Hotblack posted the simple card from 'Advance Headquarters Tank Corps' in December 1917, presumably to his parents in Norfolk. It includes a print of a crewman waving his cap from a Mark IV tank beneath the words 'Christmas Greetings'. The small postcard-size item includes the Tank Corps' crest and its battle honours; Somme, Ancre, Arras, Messines, 3rd Ypres and Cambrai. The cards were printed especially for the Tank Corps, which was a little more than a year old by Christmas 1917. Hotblack signed it with his name in pencil. The card has been discovered in the archives of the Tank Museum at Bovington, Dorset, where it will now go on display." Festive card from British WW1 hero emerges 100 years later | Daily Mail Online
I have just finished reading "Life in a Tank" on Kindle about WW1 tankers. The combat descriptions thought short were vivid. as the petrol tank was bolted to the underside of the top. The Germans discovered that by throwing a grenade on the top it could result is spilling the fuel on the exposed engine below causing a fire and burning the crew to death. Changing their machine gun ammunition to armor piercing was equally deadly. add Christmas to that mix !!! Truly brave but enthusiastic men.