M, it gets into semantics, but Wellington actually set the battle up on terrain upon which he remembered playing as a child. No he didn’t lead N there, but it was in N’s line of march –so W went there, knowing N would have to target his army, and would engage him there. The hidden ridge –a more complete version of the one which threw Lee’s cannoneers off at Gettysburg and defeated Pickett’s Charge (the decisive battle within the battle, and the ‘high water mark of the CSA’) –was what W wanted to –and did –exploit. OTOH, N was on unfamiliar ground, and off-footed throughout the battle. W broke him with units hidded just behind the ridge top, which he cued at the precise decisive moment, at the reach of N’s great infantry charge. Pickett, too, made it to the ground he wanted –and he too, got there exhausted, finding enemy who had not broken, and were not out of gas from a long uphill charge.