O escritor Jeph Loeb foi desviado de projetos de quadrinhos por causa de sua posição como chefe da Marvel Television, e o artista Tim Sale disse que a quantidade de detalhes que os fãs esperam sobre a Segunda Guerra Mundial era um desafio demorado.

De acordo com o ComicBookResources.com:

Loeb and Sale have worked together on many acclaimed miniseries over the years at both Marvel Comics and DC Comics, including "Batman: The Long Halloween" and "Daredevil: Yellow." In recent years, Loeb's comic book output has been limited due to his position as Head of Marvel Television.

( Fonte )

A reivindicação é apoiada por esta entrevista com Loeb e o artista Time Sale, também da ComicBookResources.com:

LOEB: ...it was a matter of finding the time, which, obviously, on my end became more and more challenging as time went by. And then, on the flip side, it was maintaining the passion for the story we were telling — and that was also a very big challenge.

Na mesma entrevista, também temos a seguinte explicação por Sale:

Tim, when I spoke with you at Emerald City Comicon last year, you said that much of it had actually been done. How much did you really have to do to complete it? And talk about your artistic process here, because it sounds like a lot of it was maybe done eight years ago — maybe a lot of it was done more recently?

SALE: No, no, it was more piecemeal than that. But at the time we talked, yeah, an awful lot of it was done. I don't remember, at that point, exactly how much. But because of various reasons, there were delays, so it just took a while. It was challenging to do.

Why was it challenging? What was challenging about this project?

SALE: Well, one of the things for me was that it took me a while to get my head around how much minute accuracy that so many people who follow World War II expect out of these kind of things. I would run into artists like Tony Harris who would die to do it because they knew every damn thing about it. I had to relax with the fact that that wasn't going to be what I was going to do.

Então, além das tarefas e do cronograma do Loeb, parece que outro motivo para o atraso é que a Venda foi concedida para garantir que eles tivessem todos os detalhes históricos corretos - aparentemente uma tarefa muito assustadora!