Napoleon's hopes of trapping General Barclay's army were dashed when he discovered that the Russian force awaiting the French was a rearguard under General Tutchkov. Barclay's main force of three infantry and one cavalry corps was strung out near Smolensk, trying to get away from the French after the Battle of Smolensk. They then turned around to fight the French on the Stragan river. After a heavy bombardment, Ney launched an assault against the Russians, crossing the Stragan but failing to capture the crest. Murat's cavalry attacks were bogged down in marshy ground and accomplished nothing either. General Junot's force was close to the battlefield and was urged to attack the Russians by Murat, but Junot did nothing and the opportunity for a decisive victory passed.