Having finished third on two points in Group B at the tournament in Chile, the Young Lions had to wait until Sunday evening before it was confirmed they were out of the showpiece.
Relying on results elsewhere to see if they would advance as one of the best third-placed sides, a late winner for New Zealand against Paraguay ensured their time in South America had come to an end.
Reflecting on their elimination, Dewsnip told TheFA.com: “Our development programme is about preparing these young men the best we possibly can to step up and play for the senior side.
“So whilst we are very disappointed to go out in the group stages, there have been great lessons learned.”
He continued: “I feel really sorry for the players as they have been a group of top young men to work with.
“Their work ethic has been magnificent and they have been excellent learners, listening to all of our ideas and strategies and lived them, but unfortunately you just need the footballing gods on your side as well sometimes.
“Firstly we had the penalty miss in the first game, then the bad luck in terms of a free-kick wrongly going against us versus Brazil which they scored a superb goal from.
Steve Cooper was assistant coach to Neil Dewsnip in Chile
“And then in the second half against South Korea they could not have tried any harder. We huffed and puffed but we couldn’t get the goal.
“You then start thinking that we need two of the other games to go our way, and it looks like it is about to happen then one of those sides scores in added time at the end to rub salt in the wounds.”
Although Dewsnip had obviously hoped to see his side fare better in Chile, the former Everton academy manager is looking long-term in the benefits of the experience.
“It has been cruel and I feel for the players but as I said there is lots of positives to take from their experience of playing in the World Cup,” he said.
“Whoever it is out of this group that plays for the England senior side, and there will be at least one if not more, the knowledge gained over the last few weeks knows no bounds.
“Playing against three completely different nations and cultures is just an amazing experience. Seeing how FIFA brand the competition and how it works means that when they come back they will not be fazed by it.”
And it is not only the players who will have benefitted from their time in South America.
“All of the staff will have gained invaluable insights and knowledge,” explained Dewsnip.
“As coaches, myself and my assistant Steve Cooper, we have learned a lot too. Hopefully in the future, if we get given the opportunity to work at a World Cup again, then we will be able to call on our experiences here.”
The Young Lions will depart Chile on Monday morning and will arrive back in England on Tuesday.
