Ruins (Pathfinder Trilogy) by Orson Scott Card

just like that time, Umbo felt a great lurch as his push into the past swept out quickly like the current of a river, carrying them much farther into the past than Umbo could have sent them on his own. It was Rigg’s ability to hook on to someone in the past that drew them, as much as Umbo’s pushing. And it was so far that they went, ten thousand years, almost as far as the whole history of the human race on Garden.
    They did not disappear, of course—Umbo could see them as well as ever. But they all stumbled because the ground must have been lower then; perhaps the thatch of the grass had not built up so high. They fell a bit, then rose up and their eyes were riveted on the grassy field in front of the city, where apparently there was a war going on. As usual, Umbo saw none of it. But when Rigg reached out and touched someone there in the past, Umbo saw a glimpse of clothing, a brief outline of a person. Rigg let go almost at once and the image disappeared.

CHAPTER 4
    Battle
    In all her life, Param had never been in the presence of more than about fifty people at a time. Even that was unusual, and she had preferred to avoid large dinners or recitals or whatever was being put on in Mother’s honor. And while social events could be full of vicious infighting, it was done with words, looks, and gestures. Nothing had prepared her for war.
    She had imagined war, of course—that was what most of history was about, the Sessamoto lords-in-the-tent leading their marauders on devastating raids against whatever village or town looked least protected, and then as kings-in-the-tent forcing the other tribes of the northeast to unite under their rule. Finally the King-in-the-Tent had conquered every nation of the Stashi Plain and subdued every freehold and every wild tribe of the woodlands and every fishing village of the coasts and through all of herstudy of that history, Param had pictured it all like a combination of the game of queens and the game of clay-casting, with the clay balls alternately knocking over pawns and queens, and dashing to pieces against them.
    She had an intellectual knowledge that war was bloody. King Algar One-eye was an obvious example, and General Potonokissu had worn a wooden leg when he walked, though never when he rode. They had been maimed in battle, and if such things could happen to the rulers of armies, Param could only imagine what happened to the ordinary soldiers.
    But when all but Umbo joined hands and suddenly dropped into the past, Param was almost overwhelmed by the noise of it. She could hear yelling: fierce cries of warriors, shouted commands from officers, screams of wounded men. And there was a smell of burning meat that almost gagged her, mixed as it was with the other stinks of the battlefield.
    Her reflex was to sliver time so she could disappear. She relied on this ability to retreat from anything that frightened her. But she caught herself, realizing that Rigg had not been wrong after all when he worried about her disappearing in the past.
    She knelt up and saw that Rigg, who was more used to sudden shifts of time, was already standing up and striding toward three adult women who were watching the battle. Rigg would speak to them; Param had no desire to. The women looked careworn and grief-stricken. They stood near a stockade that surrounded the city and sheltered their party from the view of the soldiers where the battle was being waged.
    The stockade looked as if it had been hastily thrown up ina day, braced from behind here and there. She wondered how well it would hold up against a determined enemy. It had been clumsily built; through gaps between the poles it was possible to see the battle.
    But Param did not want to see the battle. She had thought that was what she was coming to see, but now that she was here, it was the city that fascinated her, because it was only half built. Only the lower buildings existed, and instead of the uniform black of the towers in Param’s own