The riders near the fire were from two different mingans and hadn’t thought about it in some time. Three of them were working on tack, a fourth sitting with his back against a saddle doing nothing in particular, and two more were talking across the coals in the low volume men used when nothing was scheduled and they weren’t in a hurry to find something to fill it.

One of them said something and the others reacted, and the sound went across the open ground without the specific words making it.

Batu was reading what the fire showed him.

Men who’d come through the Suvar operation together rested differently beside each other than men who hadn’t. It wasn’t in any specific behavior he could point at directly.

It was in how they occupied the space around the fire, how no one checked before speaking, how a hand went out for something and the thing was already there before the receiver had looked for it. The ease of men who’d been in something difficult and come back from it to this.

He was still watching this when Siban found him.

Siban hadn’t searched. He’d looked at the open ground between the Khar Kheshig section and the main camp and come to where Batu was standing on the first pass. He arrived without announcing himself, stood where Batu stood, and looked at the same fire for a moment, taking in what there was to take in.

Then he looked at Batu and waited.

"You’ve been in charge of the intelligence work since for more than a year now."

Batu said. His eyes stayed on the riders across the open ground. "It is not a tumen or any command in Torghul’s chain or Orda’s. The role you’ve been in sits outside the hierarchy structure by design."

Siban said nothing. He was working out where it was going.

"That’s not a difference in your standing," Batu said. "It’s what I’ve needed from you. It’s what comes next too."

Siban waited.

"I need a unit," Batu said. "It’s not a military unit in the strictest sense. You won’t be joining a tumen nor be part of the campaign directly. It answers to me and to nobody in the command hierarchy between us."

"What does it do," Siban said.

"It goes into enemy territory before the army gets there."

Batu kept his voice at the level the cold air between them required, nothing more. "Weeks ahead. Men inside a Rus city while we’re still on the winter steppe. Men who know which noble household in that city is looking for a way out before the army arrives and which one will resist until there’s nothing left of it to protect."

Siban was still watching the fire.

"Track important targets," he said.

"Yes. And have specific targets removed before they become a military problem. A prince who’s organizing resistance. A commander whose presence at a fortification changes how long it takes to collapse. Named work against named people, sanctioned before it happens, so the army never has to fight the engagement at all."

Siban absorbed this. His face in the cold was its ordinary face, giving nothing specific back.

"What else," he said.

"Military intelligence. Terrain and fortification states. River conditions in spring. Garrison strength and the state of supply. From inside the territory, weeks before any screen rider gets close enough to see it."

"And the next thing," Siban said.

Batu looked at him for a moment.

"Finding who’s watching this camp," Batu said. "What they carry back east or west. What they’re permitted to carry back and what they aren’t."

Siban looked at the fire across the open ground. "Who knows the unit exists," he said.

"You and I. That’s the full list."

"Torghul knows I have an intelligence role."

"He knows you have a role," Batu said. "What that contains is your security problem. Not his."

Siban nodded once, accepting it.

"The recruitment," he said.

"Loyal men who already know how to move between places without being noticed. The kind of person who’s been somewhere and then gone from it without anyone marking the departure."

"Men like me," Siban said.

"Yes."

"The Borte-Qol channel," Siban said.

"It’s useless now. We will discard it when it becomes convenient."

Siban looked at the open ground for a moment.

"You’re describing something that doesn’t have a name yet," he said.

"Nüden," Batu said.

The Mongolian word for eyes. The point wasn’t the vision of one man looking at what was directly ahead. It was the distributed capacity to see from positions a single man couldn’t occupy at once.

Siban said the name once to confirm he had it.

"The first work," Siban said. "Before spring."

"Ryazan. The garrison strength, the fortification state, the roads coming in from the steppe, the river conditions on the Oka routes. From inside the principality."

Siban looked at the winter air above the camp and considered something against something else.

"I will need the winter to build this unit."

"You have it."

"The first men I’m looking for," Siban said, "are the ones who were in charge of small operations along the Volga before the army moved here. Men who crossed between territories for commercial reasons and know how to be unremarkable in a new place. The subordinate camps have some of them."

"Then start there," Batu said.

There was nothing left in the conversation that needed to be in it. Siban took his leave without ceremony, the way he’d arrived. He went in the direction the first task required, toward the camp outskirts and the routes beyond it, not back toward the formation areas where the rest of the command hierarchy lived and worked.

Batu stayed where he was. The fire across the open ground had the same riders around it. The man who’d said something that made the others react had moved position and was working on tack repair now, and the others were still talking in the same volume they’d been using when Batu arrived.

The cold kept the character it had before Siban came. The camp had its winter routine in every direction, none of it showing what had just been built in the space between two men watching a fire from a distance.

The Nüden existed now. And it would soon induce fear to many from the shadows.