This is a general chronology of Isaac and the 125th Ill. Infantry Rgt. Might help put whatever other information you acquire into prespective. His service/pension files should pin down where he was wounded. I couldn't do that. He died at Chattanooga but I think he was wounded somewhere between Chattanooga and Atlanta and brought to a Chattanooga hospital. Isaac is buried in the Chattanooga National Cemetery according to the VA.

Aug. 13, 1862 Isaac N. Adams of Georgetown, Ill., c.1835 born at Georgetown, married, farmer, 5 feet, 11 inches tall, black hair, dark eyes, dark complexion, enlisted by G. W. Cook at Catlin, Ill. as sgt., Co. K, 125th Ill. Infantry Rgt.
Sept. 3, 1862 Regiment including Adams mustered in at Danville, Ill. after organizing at Danville, Ill.
Sept. 25, 1862 Regiment moved to Covington, Ky.
Oct. 1-16, 1862 Pursuit of Bragg into Kentucky
Oct. 8, 1862 Battle of Perryville, Ky.
Oct 16-Nov. 7, 1862 Regiment moved to Nashville, Tenn. and there until June 30, 1863. June 30, 1863 Regiment moved to Murfreesboro, Tenn.
July 18, 1863 Regiment returned to Nashville and there until Aug. 20.
Aug 20-Sept 16, 1863 Regiment moved to Chattanooga. Tenn. via Brentwood, Columbia, Huntsville, Ala.. and Bridgeport, Ala.
Sept. 19-21, 1863 Battle of Chickamauga, Ga.
Sept. 24-Nov. 23, 1863 Siege of Chattanooga, Tenn.
Sept 26, 1863 Ringgold, Ga.
Nov. 23-27, 1863 Chattanooga-Ringgold Campaign
Nov. 23, 1863 Orchard Knob, Tenn.
Nov. 24-25, 1863 Tunnel Hill, Tenn.
Nov 25, 1863 Missionary Ridge, Tenn.
Nov. 26-27 Pursuit to Graysville, Ga.
Nov. 28-Dec. 17, 1863 March to relief of Knoxville, Tenn.
to May 1864 Regiment at Lee and Gordon's Mills, Ga.
Feb. 22-27, 1864 Demonstration on Dalton, Ga.
Feb 23-25, 1864 Tunnel Hill, Tenn. and Buzzard's Roost Gap and Rocky Faced Ridge, Ga.
May 1-Sept 8, 1864 Atlanta, Ga. Campaign.
May 6-7, 1864 Tunnel Hill, Tenn.
May 8-11, 1864 Demonstration on Rocky Faced Ridge, Ga.
May 8-9, 1864 Buzzard's Roost Gap, Ga.
May 14-15, 1864 Battle of Resaca, Ga.
May 17-18, 1864 Rome, Ga.
May 25-June 5, 1864 Operations along Pumpkin Vine Creek and battles about Dallas, New Hope Church and Allatoona Hills, Ga.
June 10-July 2, 1864 Operations about Marietta and against Kenesaw Mountain, Ga.
June 11-14, 1864 Pine Hill, Ga.
June 15-17, 1864 Lost Mountain, Ga.
June 27, 1864 Assault on Kenesaw Mountain, Ga.
July 4, 1864 Ruff's Station, Smyrna Camp Ground, Ga.
July 5-17, 1864 Chattahoochie River, Ga.
July 19-20, 1864 Peach Tree Creek, Ga.
July 22-Aug. 25, 1864 Siege of Atlanta, Ga.
Aug 5-7, 1864 Utoy Creek, Ga.
Aug 25-30, 1864 Flank movement on Jonesboro, Ga.
Aug. 31-Sept. 1, 1864 Battle of Jonesboro, Ga.
Sept. 2-6, 1864 Lovejoy Station, Ga.
Sept. 29-Nov. 3, 1864 Operations against Hood and Forest in North Georgia and North Alabama.
Nov. 4, 1864 I. N. Adams died at Chattanooga, Tenn. of wounds received in action and buried in Chattanooga, Tenn. National Cemetery, Plot: G 8354 (Middle initial given as H. but its the only contradiction)

Regiment then took part in March to the sea/Savannah, Ga. campaign followed by Carolina Campaign.
June 9, 1865 Regiment mustered out. Nine officers and 88 enlisted men killed or died of wounds and three officers and 104 enlisted men died of disease or other non-battle causes=204.