While Burgoyne's troop strength was nominally higher, he likely had only about 5,000 effective, battle-ready troops on October 7, as losses from the earlier battles in the campaign and desertions following the September 19 battle had reduced his forces. General Riedesel advised that the army retreat. Burgoyne decided to reconnoiter the American left flank to see if an attack was possible. As an escort, the generals took Fraser's Advanced Corps, with light troops and the 24th Foot on the right and the combined British grenadiers on the left, and a force drawn from all the German regiments in the army in the center. There were eight British cannon under Major Williams and two Hesse-Hanau cannon under Captain Pausch. Leaving their camp between 10 and 11 am, they advanced about three-quarters of a mile (1 km) to Barber's wheat field on a rise above Mill Brook, where they stopped to observe the American position. While the field afforded some room for artillery to work, the flanks were dangerously close to the surrounding woods.