In Roman military history, a mound or rampart constructed as a fortification or siege structure; a raised earthwork used for defense or attack.
From Latin 'agger' (embankment, rampart), related to 'aggerere' (to carry towards). This archaeological/historical term refers to Roman military engineering practices.
Roman military engineers were brilliant—an agger was their solution to siege warfare, allowing soldiers to attack fortress walls from a raised platform that enemies couldn't easily destroy.
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