At Culpepper Courthouse, Meade was beginning to think Lee was moving north around his flank. But he still had no reports showing this was the case. By the night of October 10, Meade decided a fight in the constricted area of Culpepper was dangerous and might give Lee an advantage. He ordered his entire army north of the Rappahannock. Buford had not received word of the Union army moving north and waited for support from I Corps on the morning of October 11. Instead, he was attacked by Confederate cavalry. The Union and Confederate cavalry units fought throughout the day and by evening Buford had fought his way back across the Rappahannock. But this had distracted the Union cavalry from discovering where Lee's army was.