The night of the 15th we camped in an orchard on Bakers creek as it is called1 In the morning 16th bright and early I arose and soon found a sweet potatoe patch and then had a camp kettle on quick enough I scarcely had them cooked before we heard the guns popping in front.2 The orders were soon given to harness up and we were soon put in position on a hill by some cabins. After cutting down some trees to begin we then changed position to a field in our rear we first went to a wood then out on we converged in the field: we were then ordered into a wood where our guns (Parrot) did their first firing - then we were ordered onwards to where a number of negro cabins were in a field
1 Located along the Big Black River Basin as shown here
2 The Battle of Champion Hill (also called the Battle of Baker’s Creek) was fought immediately before the Battle of Vicksburg. Ulysses S. Grant and his Tennessee army pursued the Confederates who were retreating from Jackson, led by Lieutenant General John C. Pemberton, to Baker’s Creek and finally Vicksburg.
See http://www.nps.gov/history/hps/abpp/battles/ms009.htm; http://en.wikipedia.org/wiki/Battle_of_Champion_Hill