https://www.warhistoryonline.com/ancient-history/5-stages-preparing-roman-siege-m.html
When the Roman army laid siege to a city, there were no half measures. Great effort went into preparing such an operation, the construction skills of
ancient roman armysiegetechniquemethodical
https://www.warhistoryonline.com/ancient-history/3-key-phases-in-the-history-of-theromanarmy-m.html
The Roman army is often remembered as a highly professional force, with legionaries in segmented armour organised into centuries for close order combat.
roman armywar machineancient worldmighty