sentences:  The closest large Swedish army unit, the 800-man Södermanlands regemente, was alerted and under its commander Rutger Fuchs force marched 19 kilometers to meet the enemy.Lieutenant-colonel Johan von Essen was sent ahead with a force to protect the arrival of the rest of the regiment.After a rapid march through rocky and densely forested terrain under a hot summer sun, von Essen reached Baggenstäket before 7pm without encountering any fire.