McClellan had over a hundred thousand men. Lee had less than ninety thousand, even after Jackson had joined him. To attack McClellan's strongly fortified front, with its almost impregnable flanks, would have been suicide. But McClellan's farther right, commanded by that excellent officer, FitzJohn Porter, lay north of the Chickahominy, with its own right open for junction with McDowell. So Lee, knowing McClellan and the state of this Federal right, decided on the twenty-fourth to attack Porter and threaten McClellan's communications not only with McDowell to the north but with White House, the Federal base twenty miles northeast. This was an exceedingly bold move, first, because McClellan had plenty of men to take Richmond during Lee's march north, secondly, because it meant the convergence of separate forces on the field of battle (Jackson being at Ashland, fifteen miles from Richmond) and, thirdly, because the Confederates were inferior in armament and in supplies of all kinds as well as in actual numbers. Magruder, who had held the Yorktown lines so cleverly with such inferior forces, was to hold Richmond (on both sides of the James) with thirty-five thousand men against McClellan's seventy-five thousand, while Lee and Jackson converged on Porter's twenty-five thousand with over fifty thousand. Then followed the famous Seven Days, beginning on the twenty-sixth of June near the signpost at the Mechanicsville bridge--TO RICHMOND 4-1/2 MILES--and ending at Harrison's Landing on the second of July. On the twenty-sixth the attack was made with consummate strategic skill. But it was marred by bad staff work, by the great obstructions in Jackson's path, and by A. P. Hill's premature attack with ten thousand men against Porter's admirable front at Beaver Dam Creek. Hill's men moved down their own side of the little valley in dense masses till every gun and rifle on Porter's side was suddenly unmasked. No scythe could have mowed the leading Confederates better. Two thousand went down in the first few minutes, and the rest at once retreated. Porter fell back on Gaines's Mill, where, after being reinforced, he took up a strong position on the twenty-seventh. Again there was failure in combining the attack. Jackson found obstructions that even he could not overcome quickly enough. Hill attacked again with the utmost gallantry, wave after wave of Confederates rushing forward only to melt away before the concentrated fire of Porter's reinforced command.