German WWI officer's photos from the Eastern front

A Flickr user has posted a collection of 127 photos taken by a German army officer on the Eastern Front during WWI. The photos are amazing, running the gamut from ruined buildings and legless corpses lolling in ditches to happy children shoveling snow and mustachioed officers hoisting steins and grinning. Pictured here: bearded POWs on a forced march. Link (Thanks, Brendan!)