Herbert Samuel Thomas MBE (13 October 1883 – 6 September 1966) was a British political cartoonist contributing to Punch magazine and the creator of well-known British propaganda posters during the First and Second World Wars.

[5] In 1918 he became nationally known for his cartoon "Arf a mo, Kaiser", drawn in ten minutes for the Smokes for Tommy Weekly Dispatch campaign.

[3][6][7] The cartoon raised nearly a quarter of a million pounds towards "comforts" (tobacco and cigarettes) for front line troops and the image was re-drawn and used during the Second World War with the caption "Arf a mo, 'itler".

[8] The Germans banned the "Arf a mo, 'itler" cartoon and to ensure British prisoners did not have their comfort parcels confiscated, he created a variation with the caption "Are we downhearted?

[1] Thomas died at his home at 33 Inverness Terrace, Bayswater, London, on 6 September 1966, from a stroke.