When the battle began on Sunday morning there were about 33,000 Federal troops at Pittsburgh Landing, and on the evening of that day General Lew. Wallace arrived from Crump's Landing with some 5,000 more. But as many men fled from the field, panic-stricken, without firing a shot, it is not likely that on that day there were at any time more that 25,000 men in line. This is Grant's estimate. The next day, Buell came up with the Army of the Ohio, 20,000 strong. And then, there were the two gunboats, the Tyler and Lexington, which rendered valuable service. Reports of the strength of the Rebel force vary. According to General Beauregard, it contained more than 40,000 men on the first day of the battle, although, he says, he was not able to get more than 20,000 into action on the morning of the second day. Official records state that the effective Rebel forces, at the beginning of the battle, included 35,953 infantry and artillery and 4,382 cavalry, a total of 40,335. From these figures it is apparent that the two armies were, on the first day, by no means equally matched, the Rebels having a preponderance of about 7,000 men, while on the second day the Union army was numerically by far the stronger. The Union loss in the two days' fighting was 1,754 killed, 8,408 wounded and 2,885 captured or missing; total, 13,047. Of these, Buell's Army of the Ohio lost 241 killed, 1,807 wounded and 55 captured or missing; total, 2,103. The official report of Rebel losses was 1,728 killed, 8,012 wounded, and 959 missing; total, 10,699. This, Grant says, cannot be correct, for the Union troops after the battle buried, by actual count, more Rebel dead than thus reported in front of Sherman's and McClernand's divisions alone. The estimate of the Union burial parties was that fully 4,000 Rebel dead lay on the whole field. CHAPTER X. OFFICIAL REPORTS ON SHILOH. SHERMAN'S OWN STORY--HOW HIS TROOPS WERE POSTED--THE ATTACK-- TROOPS IN DISORDER--GRANT AND BUELL AT THE BIVOUAC--THE BATTLE RESUMED IN THE MORNING--DEATH OF GENERAL JOHNSTON--GALLANT CONDUCT OF INDIVIDUAL OFFICERS--GRANT'S OFFICIAL REPORT-- SPECIAL MENTION OF SHERMAN FOR HIS GALLANTRY AS A SOLDIER AND HIS SKILL AS A COMMANDER.