Siege equipment grew enormous, with towers pushed by thousands of men

Evidence

Over time, fortress walls got thicker and taller, and siege towers and battering rams bigger. Early Assyrian siege towers had two or three stories, carrying rams handled by several dozen men. Later models got taller and wider, and, in their heyday, towers stood more than ten stories high, pushed by more than two thousand men. Battering rams reached lengths of 150 feet, crewed by a thousand men apiece. — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 515

Categorization

  • XREF: connects to: Pushing siege weapons to longer range only drove artillery growth — Emlen, Douglas J, Animal Weapons_ The Evolution of Battle, 514