I was not too interested in WWI biplanes and such, but Kubert's art was so compelling that I collected each issue with fervor. These years later, I'm a bit bored by the repetitive storylines, but any one story, by itself, is very readable (if you read the archives in one sitting, it's a bit much). Kubert's art, though, only got better and better as the series wore on.
Below, some sample pages out of context.