In his history of the 57th titled Hell's Broke Loose in Georgia*, Scott Walker wrote the following about the Battle of Champion Hill / Baker's Creek:
As the men of the Fifty-seventh Georgia crossed Baker's Creek late on the night of May 16  and raced through the dark for the Big Black River [Mississippi], they were no longer strangers to such tragedy and horror. Their memories were scarred forever by the early days of the Vicksburg campaign.
And this portion he wrote about the Siege of Vicksburg:
As soon as [General] Grant resigned himself to a siege, he ordered his engineers to begin moving the Union lines closer to Vicksburg by using assault trenches...The trenches were zigzagged to keep the Rebs from firing down their length...
[Union General] Lauman also deployed snipers. Exposed soldiers risked instant death. John Walden Jr., a young private in the Fort Valley Infantry, Fifty-seventh Georgia, was not aware that his anxious father had caught a train for Vicksburg to check on his son and bring supplies to the Fort Valley troops. Union sentinels stopped the senior Walden upon his arrival in the Vicksburg vicinity and denied him passage through the lines. He waited helplessly for days for word of his son.
After a particular fierce shelling, young John Walden peered over the trench line for a brief moment. A Yankee sharpshooter placed a bullet cleanly through his forehead. Only after Vicksburg surrendered did his waiting father learn of his son's death and burial. Because of the war the grief-stricken father could not take the corpse home. Instead, the elder Walden returned home with the Fort Valley Infantry after the Vicksburg surrender and erected a simple monument in his son's memory that stands today in Fort Valley.
|Death Loves a Shining Mark|
John Clayton Walden
Born March 26, 1846
Killed in Battle at Baker's Creek
May 16, 1863
As you can see, the white bronze marker states Pvt. Walden was killed in the Battle at Baker's Creek (a.k.a. Champion Hill). This same information is found in the young soldier's service record.