Hoplites fighting in Phalanx formation

[Tarbicus]

Pressure is described also in roman battles at the point that the dead remained in their place as there was no space to fall!

How many battles does that apply to? Not many, I'll bet. The whole idea of Roman "push'n'shove" combat is far from proven. Small incursions and group sparring are far more likely. Cannae was an exception.