Editing Battle of Shiloh (section)

===Pittsburg Landing and the Union left===
[[File:BattleOfShilohDay1East9AM.png|thumb|upright=1.5|At 9:00 am, Stuart could hear artillery fire, but was not yet attacked|alt=Map showing Sunken Road, Peach Orchard, Pittsburg Landing, Tennessee River, and troop positions]]
Grant was in Savannah having breakfast at his [[Cherry Mansion]] headquarters when he heard the distant sounds of artillery fire.<ref name="Chernow200">{{harvnb|Chernow|2017|p=200}}</ref> He was on crutches as he recovered from a fall from his horse, and he was waiting for more of Buell's army to arrive in Savannah.<ref name="Daniel139">{{harvnb|Daniel|1997|p=139}}</ref>{{#tag:ref|Ahead of most of his divisions, Buell had already arrived in Savannah, and was walking to Grant's headquarters when Grant departed by boat for Pittsburg Landing.<ref name="Cunningham158">{{harvnb|Cunningham|2009|p=158}}</ref>|group=Note}} Grant ordered Bull Nelson to march his division along the east side of the river to a point opposite Pittsburg Landing, where it could be ferried over to the battlefield.<ref name="Daniel242">{{harvnb|Daniel|1997|p=242}}</ref> Grant then took his steamboat, ''Tigress'', south to Crump's Landing, where he told Lew Wallace to get his division ready to move.<ref name="Daniel174">{{harvnb|Daniel|1997|p=174}}</ref> Grant proceeded to Pittsburg Landing, arriving around 9:00{{nbsp}}am.<ref name="Daniel175">{{harvnb|Daniel|1997|p=175}}</ref>{{#tag:ref|Sources have slight differences for Grant's Pittsburg Landing arrival time. Cunningham says around 8:00{{nbsp}}am.<ref name="Cunningham159">{{harvnb|Cunningham|2009|p=159}}</ref> Esposito says 8:30{{nbsp}}am.<ref name="Esposito34"/> Daniel and McPherson say 9:00{{nbsp}}am.<ref name="Daniel175"/><ref name="McPherson409"/> Chernow says Grant disembarked around 9:00{{nbsp}}am.<ref name="Chernow200"/>|group=Note}} The landing was beginning to accumulate men who had fled their posts, and Grant ordered a colonel to halt all stragglers. He then rode inland and confirmed that the Confederates had launched a full-scale attack instead of a probing action. He sent a message to Crump's Landing, ordering Lew Wallace to bring his division to the battlefield.<ref name="Cunningham159-160">{{harvnb|Cunningham|2009|pp=159–160}}</ref>{{#tag:ref|This order would be the subject of controversy, as Lew Wallace disputed where he was told to go and by what route, and claimed the copy of the order was lost.<ref name="Cunningham160">{{harvnb|Cunningham|2009|p=160}}</ref>|group=Note}}

After the beginning of the battle, Brigadier General W.H.L. Wallace sent his Second Brigade, commanded by Brigadier General [[John McArthur (general)|John McArthur]], to fill a gap on the Union left between Hurlbut's position at a peach orchard  and Stuart's brigade at the extreme Union left.<ref name="Cunningham238">{{harvnb|Cunningham|2009|p=238}}</ref> McArthur had only two of his regiments, since the others had been sent to assist Sherman and guard the Snake River bridge that led to Crump's Landing. His two–regiment force was bolstered by [[Battery "A", 1st Illinois Light Artillery Regiment|Battery A from the 1st Illinois Light Artillery Regiment]]. Wallace's First and Third brigades, commanded by Colonel [[James M. Tuttle]] and Colonel [[Thomas William Sweeny|Thomas W. Sweeny]], respectively, moved into positions near Duncan Field and what is now called the "Sunken Road"—between the divisions of McClernand and Hurlbut.<ref name="Cunningham238-240">{{harvnb|Cunningham|2009|pp=238–240}}</ref> From 9:30{{nbsp}}am to 10:30{{nbsp}}am, most of the fighting at this position was the exchange of artillery fire.<ref name="Cunningham242-243">{{harvnb|Cunningham|2009|pp=242–243}}</ref>

On the extreme Union left, Stuart's brigade had heard musket firing early in the morning, but did not believe they were under attack until they heard distant artillery fire.<ref name="Daniel198">{{harvnb|Daniel|1997|p=198}}</ref> At 9:30{{nbsp}}am Johnston received reports that Union soldiers were deploying on the Confederate right [[Flanking maneuver|flank]]. To remedy this potential problem, he sent two brigades from Bragg's Corps, and called up Breckinridge's Reserve Corps. What his scouts had actually found was the camp belonging to Stuart's Brigade. Stuart was near the Hamburg-Savannah Road close to Lick Creek.<ref name="Daniel196-197">{{harvnb|Daniel|1997|pp=196–197}}</ref> Around 9:40{{nbsp}}am Stuart began receiving artillery fire, and twenty minutes later his men were attacked by Confederate infantry.<ref name="Daniel199">{{harvnb|Daniel|1997|p=199}}</ref>