General Lee also understood the defensive potential to the Union army if they held the high ground of Cemetery Hill. He sent orders to Ewell to "carry the hill occupied by the enemy, if he found it practicable, but to avoid a general engagement until the arrival of the other divisions of the army." In the face of this discretionary, and possibly contradictory, order, Ewell chose not to attempt the assault.^[53] One reason posited was the battle fatigue of his men in the late afternoon, although "Allegheny" Johnson's division of Ewell's Corps was within an hour of arriving on the battlefield. Another was the difficulty of assaulting the hill through the narrow corridors afforded by the streets of Gettysburg immediately to the north. Ewell requested assistance from A.P. Hill, but that general felt his corps was too depleted from the day's battle and General Lee did not want to bring up Maj. Gen. Richard H. Anderson's division from the reserve. Ewell did consider taking Culp's Hill, which would have made the Union position on Cemetery Hill untenable. However, Jubal Early opposed the idea when it was reported that Union troops (probably Slocum's XII Corps) were approaching on the York Pike, and he sent the brigades of John B. Gordon and Brig. Gen. William "Extra Billy" Smith to block that perceived threat; Early urged waiting for Johnson's division to take the hill. After Johnson's division arrived via the Chambersburg Pike, it maneuvered toward the east of town in preparation to take the hill, but a small reconnaissance party sent in advance encountered a picket line of the 7th Indiana Infantry, which opened fire and captured a Confederate officer and soldier. The remainder of the Confederates fled and attempts to seize Culp's Hill on July 1 came to an end.^[54]