Can one of our loca experts in Roman history confirm if roman soldiers really acted like fucking marines?
I studied military history as well, with some stuff about the roman military and no they did not.
The romans where no geniuses in fighting, they fought wars of attrition and won them by their superior organisation and abbility to raise new armies from a huge pool of people. If they lost a battle (and they did, a lot) they just raised a new army.
To be able to raise their armies they didnt subjugate new territories but made these people roman citizens, which in turn made it possible to have them fight.