By late afternoon on July 9, following the northernmost Confederate victory of the war, the Federals were retreating toward Baltimore, leaving behind more than 1,294 dead, wounded, or captured. Early's army had won the field at Monocacy, but at the cost of an estimated 700 to 1,000 men killed or wounded and the loss of a day's march. Wallace telegrammed Halleck that his forces fought until 5 p.m., but the Confederate forces, which he estimated at 20,000 men, had overwhelmed them and forced a retreat. One critical objective had been accomplished: the Union troops at Monocacy Junction had delayed Early’s advance on Washington by a full day.