The Welsh strategy was to contain
It worked until England played 5 strikers who would swamp the midfield and the only "defence" against that is to go on the attack. Hard to do when you're under the cosh, but it is the best thing you can do. Or, as we did, you can put your bodies on the line and just try and block everything and defend, but that's hard to do for that period of time, another minute is all they needed.