Yep. That's why the English were the only major ones that had it. By the time everyone else realized how effective it was, they didn't have enough time to train it up. Crossbows and early handguns were just so much easier to learn that it wasn't worth it for anyone else to go the longbow route. This meant that later on the English were a lot slower getting involved in the gunpowder race, though, as they had their longbow crutch to fall back on.