Source A: Description of Roman Legion Tactics

"The Roman legion was a formidable force, organized into centuries and cohorts, each disciplined to carry out precise maneuvers. Soldiers trained rigorously to fight in tight formations called testudo, where shields overlapped to protect against projectiles. The legate commanded the legion, ensuring discipline and coordination. Their tactics often involved rapid marching, combined arms, and strategic positioning to outflank enemies. The soldiers' discipline was strict, and punishments for disobedience were severe. The legions also built fortifications quickly, allowing them to control territory and protect their supply lines. This organization made the Roman army highly effective in both offensive and defensive operations across vast territories." Provenance: Ancient historian Cassius Dio, 3rd century AD, Roman historian’s account.