Meanwhile, Jackson was not advancing as Lee had planned. He was taking time to rebuild bridges over the Chickahominy and he received a garbled order from Lee's chief of staff that made him believe he should stay north of the river and guard the crossings. These failures of the Confederate plan were being matched on the Union side, however. Heintzelman decided on his own that his corps was not needed to defend Savage's Station, Sumner's and Franklin's being sufficient, so he decided to follow the rest of the army without informing his fellow generals.