During a period when Roman military formations remained unchanged, Publius Cornelius Scipio aka Scipio Africanus changed the game.

At Ilipa he executed oblique order tactics in a surprising new way, catching the Carthaginians of guard .

His victory at the battle not only helped Rome secure the Iberian peninsula but until today stands as a testament to the mans genius

Sources
In the Name of Rome by Adrian Goldsworthy
The Complete Roman Army by Adrian Goldsworthy
Scipio Africanus by B.H. Liddell Hart
The History of Rome by Titus Livius