Eighteenth Missouri, comprised the Eighteenth Missouri and Sixty-first Illinois. The Sixteenth Iowa, assigned to this brigade, arriving fresh from the recruiting depot, without ammunition, on April 5th, reported to General Prentiss that day, but was sent by him to the landing early in the morning of the 6th, and was by General Grant assigned to duty that day in another part of the field. The Eighteenth Wisconsin arrived and reported on April 5th, and the Twenty-third Missouri arrived in the morning of the 6th, and reported on the field at nine o'clock.[2] But these two regiments were not formally assigned to either brigade. The Fifteenth Iowa, assigned to this division, arrived the morning of April 6th, and was assigned to duty in another part of the field. The Fourteenth Wisconsin, assigned to the division, arrived late in the night of April 6th, and served on the 7th with Crittenden's division of Buell's army. [Footnote 2: The Fifteenth Michigan arriving without ammunition, immediately before the attack began, marched to the rear for ammunition and, returning to the field, fought through the day between the Eighteenth Missouri and the Eighteenth Wisconsin.] The artillery was not attached to brigades, but was under the direct command of division commanders. The batteries of Schwartz and McAllister, and Burrow's Fourteenth Ohio Battery served with McClernand's division. Willard's Company A, First Illinois Artillery, commanded by Lieutenant Wood, and Major Cavender's battalion of Companies D, H, and I, First Missouri Artillery, were attached to W.H.L. Wallace's division. Mann's four-gun battery, Ross' Second Michigan, and Myer's Thirteenth Ohio batteries, were attached to Hurlbut's division. Behr's Sixth Indiana Battery, and Barrett's Company B, and Waterhouse's Company E, First Illinois Artillery, were attached to Sherman's division. Barrett's battery had formerly been commanded by Captain Ezra Taylor, promoted Major of the First Illinois Artillery, and was still commonly called Taylor's battery, and is so styled in some of the reports of the battle. Munch's Minnesota and Hickenlooper's Fifth Ohio Battery were attached to Prentiss' division. There was some change in the assignment of batteries on April 5th. The above gives their position as it was on April 6th. Bouton's Company I, First Illinois Artillery, and Dresser's battery, commanded by Captain Timony, though not assigned, were given positions on the field by Major Ezra Taylor, Sherman's chief of artillery, by direction of General Grant. Margraff's Eighth Ohio Battery served with Sherman, Powell's Company F, Second Illinois Artillery, served with Prentiss. Madison's Company B, Second Illinois Artillery, served at the landing. Captain Silversparre's four-gun battery of twenty-pound Parrotts, though assigned to McClernand, remained at the landing from lack of horses and equipage to pull them out to camp.