Boring

Having just watched it for the first time, I'd say that it was anything but boring. The character development was understandable and not clichéd. The look of the film was, though studio shot, rather realistic. While it was nowhere near what the Italian Neo-Realists were doing, it did show much more sense of social realism than most British films made during the war. The film managed to present the realities of both characters, allowing us to understand and empathize with them.

I didn't expect much, but was pleasantly surprised.

I want to shake every limb in the Garden of Eden
and make every lover the love of my life

I didn't find it boring. It wasn't a shoot-'em-up type of war film, but it did win the Academy Award for writing (original story). I thought it was an excellent character study and a sensitive look at a marriage under stress.

A person's a person, no matter how small. -- Dr. Seuss