... forcing a battle upon unequal terms. Two brigades (Mahone's and Posey's) of Lee's army were stationed at United States ford, and their commander only received notice of the approaching danger when General Meade was crossing at Ely's ford, only six miles distant, and then from a straggling cavalryman. General Mahone moved at once to Chancellorsville, and it was well he did, for at daybreak the following mo...