From Dennis Showalter: Tannenberg:
The roundup of [Samsonov's Russian] 2nd Army’s broken center continued throughout August 31. Skirmish lines and small columns of XVII Corps pushed their way through the forest from the north, collecting stragglers as they went. An Orthodox chaplain negotiated the surrender of several thousand exhausted soldiers to Schmettau just outside Willenberg. At 11:00 a.m. Kluyev himself handed over another thousand men to a detachment of I Corps. Hour by hour the numbers grew. Hundreds, then thousands of men sat glumly under the guard of a few German riflemen. Riderless or unharnessed horses wandered about. The detritus of a broken army, ambulances, supply wagons, telephone carts, piled up on the Neidenburg-Willenberg road.