When he came level with the Foot Guards he noticed that about them and around them cannon balls were flying, of which he was aware not so much because he heard their sound as because he saw uneasiness on the soldiers' faces and unnatural warlike solemnity on those of the officers.

Passing behind one of the lines of a regiment of Foot Guards he heard a voice calling him by name.

"Rostov!" "What?" he answered, not recognizing Boris.