Latest / Tamerlane: The Conqueror Who Tried to Rebuild the Mongol Legacy — Fexingo History / Tamerlane's Engineers: The Siege Masters of the Timurid Army
Transcript
- Lucas: If you've been stepping into history with us episode by episode, you'll know Tamerlane was more than just a cavalry commander. Today we're looking at the backbone of his conquests: his engineers. Luna: Engineers? I don't think we've talked about those yet. Lucas: No, we haven't. And they were crucial. Tamerlane's army could dismantle a fortress in weeks, and that wasn't just because of his cavalry. He had a dedicated corps of siege engineers — craftsmen, miners, carpenters, and stonemasons — who built the machines that brought down walls. Luna: It's funny — honestly, if this episode was worth a coffee to you, that's all we ask. There's a link at buy me a coffee dot com slash fexingo. Keeps the show ad-free. Lucas: Yeah, exactly. So back to it — Tamerlane's engineering corps was famously multi-ethnic. He'd recruit specialists from every city he conquered, especially Persians and Chinese, who had centuries of siegecraft knowledge. Luna: So he built his own brain trust out of captives? Lucas: Pretty much. The Zafarnama describes how after taking a city, he'd order all skilled artisans to be separated out and sent to Samarkand or to his siege train. By the 1380s, he had a mobile workshop with hundreds of engineers. Lucas: One of their key machines was the manjaniq, a massive trebuchet that could hurl stones weighing over a hundred kilograms. They'd assemble these things on site using timber from local forests, sometimes in just a few days. Luna: How did they move them across the steppe? Lucas: That's the genius — they didn't move them fully built. They carried the iron fittings and ropes, and then cut timber at each siege site. The engineers were trained to work fast. In the siege of Balkh in 1370, Tamerlane's first major campaign, his engineers built a wall of shields and a covered ramp that let his soldiers reach the top of the fortifications. Lucas: Balkh was a key moment because it showed that Tamerlane could take a fortified city, not just fight on open steppe. After that, he invested heavily in siegecraft. Luna: What about tunnels? Did they use sappers? Lucas: Absolutely. Sappers were a huge part of Timurid sieges. They'd dig tunnels under the walls, prop them up with wooden beams, then set the beams on fire. The tunnel would collapse, bringing down the wall above. They used this at the siege of Aleppo in 1400. Lucas: Aleppo was one of the toughest nuts. The city had massive double walls and a citadel on a hill. Tamerlane's engineers built a huge manjaniq that bombarded the walls for days, while sappers dug under the main gate. Luna: Did the walls fall? Lucas: They did. The sappers collapsed a section of the outer wall, and then the manjaniq kept firing to clear a path. Ibn Arabshah records that the bombardment was so intense that the people inside thought the earth was shaking. Lucas: Another tactic was the covered battering ram — they'd build a roofed structure on wheels, covered with wet hides to stop fire arrows, and inside they'd swing a heavy log against the gate. It was slow but effective. Luna: So they had a whole toolkit. Trebuchets, tunnels, rams. Lucas: Exactly. And they could combine them. At the siege of Sistan in 1383, Tamerlane's engineers built a massive tower on wheels that was taller than the city walls. Archers on top would shoot down at defenders while sappers worked at the base. Lucas: That tower was a marvel — it had multiple levels, and they could move it right up to the wall. The Zafarnama says it took a month to build, but once it was in place, the city surrendered within days. Luna: I've read that Tamerlane also used Chinese siege techniques. Is that true? Lucas: Yes. After his campaigns in Transoxiana, he came into contact with Chinese engineers who knew gunpowder. They used early rockets and fire lances to frighten horses and set fire to thatched roofs. But the real Chinese influence was in logistics — they taught Timurid engineers how to build pontoon bridges quickly. Lucas: That was critical for crossing rivers like the Oxus and the Jaxartes. His engineers could assemble a bridge of boats in a single day, allowing his army to move faster than any enemy expected. Luna: Was there any siege that defeated him? Lucas: Very few. One was the siege of the fortress of Karshi in 1366, when he was still a young amir. He didn't have enough engineers then, and the defenders held out for months. He learned from that failure and never went to war without a full siege train again. Lucas: By the time of his invasion of India in 1398, his engineers were the best in Asia. At the siege of Delhi, they built a palisade of shields and a wooden bridge across the Jumna in just two days. That speed was what made Tamerlane unstoppable. Luna: So the engineers weren't just support — they were part of the strategy. Lucas: Absolutely. Tamerlane himself oversaw their work. He'd ride out to inspect the siege lines, talk to the master carpenters, and order adjustments. The Zafarnama shows him personally directing the placement of a manjaniq at the siege of Balkh. Lucas: He also rewarded his engineers generously. After a successful siege, they'd get a share of the plunder and sometimes even governorship of the captured city. That kept them loyal and motivated. Luna: What happened to their knowledge after Tamerlane's death? Lucas: It persisted under his successors, especially Shah Rukh and Ulugh Beg. Ulugh Beg's observatory in Samarkand was built by the same family of engineers who had built siege engines. They turned from war to science. Lucas: But the peak of Timurid siegecraft died with Tamerlane. His sons fought each other, and the mobile engineering corps was split up. By the 1450s, the Timurids were still skilled, but they never again had that single, focused unit that could build a trebuchet in three days. Luna: So in a way, the empire's strength was also its weakness — it depended on one man. Lucas: Exactly. And that's the bittersweet end of the story. Tamerlane's engineers were the unsung heroes of his conquests, but their knowledge was scattered when the empire fractured. Still, for a few decades, they were the finest siege builders in the world.