Fencing as a Roman

[TITVS SABATINVS AQVILIVS]

Try to hook (by your shield lower edge) suddenly the umbo of your opponent, keeping your shield at about 30° inclined, then push vertically and strongly the opponent shield down to the ground pushing at the same time horizontally on him in a single action: you'll have a lot of room to hit him, pointing your gladius to his face or into the neck slot of the cuirass from above. That's good in the line combat too, of course. In any case it ask for a quick movement, but it works with oval and round shields too.

Valete,