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Cartoon character invented by David Low in the early 20th century.
Satirised the ruling political establishment of '30s and '40s Great Britain.
In squaddie terms think of any retired Full Colonel, add walrus moustache and catchphrase of "Gad, Sir" and you've got it.
Made into The Life and Death Of Colonel Blimp in 1943 by Powell & Pressburger, and it was surprisingly sympathetic to the Germans given the ongoing war at the time.