...his time, by the York and Harrisburgh roads, compelled General Howard, upon whom the command devolved, to withdraw his force, the First and Eleventh corps, to the Cemetery ridge, on the south side of Gettysburgh . About seven P. M., Generals Sickles and Slocum arrived on the field with the Third and Twelfth corps, which took position, one on the left and the other on the right of the new line. The battle ...