For a college level paper Wikipedia is probably not acceptable but for a discussion in dslreports.com it is fine.
If you are talking about when the recovery could be considered complete then yes, I agree that didn't happen until after WW2 started. But if you mean to say that us getting into WW2 is what caused the economic turnaround that got us out of the depression then you would be very wrong. Both of these principals are pointed out by the Wikipedia entry.
If, by Darth's quote: "Because that is what ended the great depression.", he meant the former then I misunderstood the point of his post. In fact, if that's what he meant then his reply was pretty much as pointless as saying "The depression was over when we landed on the moon in 1969" which is also correct but meaningless as far as the discussion goes.
I believe, rather, his intent was to discount any effect of the economic and social policy changes instituted by Roosevelt. I was suggesting that it is time to institute similar changes today and I believe he disagrees.