I occurred to me that I hadn't featured one of the most famous pipe smokers of all time.  Wikipedia has another color photo of him posing with his trademark corncob.

He's so famous that I don't see how I could say anything about him.

I will note that he also liked cigars, and from what I have read, he probably preferred cigars to pipes.  MacArthur always had a keen talent for showmanship, and I think his choice of this pipe was just another aspect of the image he tried to create.  I also read that his favorite pipe tobacco was "whatever was for sale at the PX," or something like that.

That huge corncob is definitely more picturesque than a cigar, in my opinion.  Such corncob pipes are still made and are called MacArthurs, after the man who made them famous.