Monday August 12 1861

• The following wooden Union gunboats, which were converted riverboats, arrive at Carlo, IL:
  • USS Conestoga
  • USS Lexington
  • USS Tyler
• Apache Indians led by Chief Nicholas attack and kill about 15 Confederate soldiers south of Fort Davis, in the Big Bend country, Texas.

Tuesday August 12 1862

• William Barksdale, CS A, is promoted Brig. Gen.
• Federal expedition from Fort Leavenworth, KS, to Independence, MO, as the Confederates threaten Kansas City, MO. (Aug 12-14)
• Federal expedition from Camp Gamble, MO, in search of guerrillas. (Aug 12-18)
• Skirmish between Stockton, Cedar County, and Humansville, MO.
• Skirmish at Van Buren, Carter County, MO.
• Col. John Hunt Morgan's CSA, Cavalry captures Gallatin, TN, and destroys bridges in that vicinity (Aug 12) and skirmish (Aug 13). (Aug 12-13)
• The Federal capture of the Breaker and the destruction of the Elma and the Hannah, by the USS Arthur, in Corpus Christi Bay, TX.

Wednesday August 12 1863

• William Smith, C.S.A., is appointed Maj. Gen.
• Benjamin Grubb Humphreys, CSA, is appointed Brig. Gen.
• The 1st Division, 9th US Army Corps, arrives from Vicksburg, MS, at Covington, KY, en route to Tennessee.
• Skirmish at Big Black River Bridge, MS.
• Union heavy Parrott batteries on Morris Island, SC, return fire against Fort Sumter and Battery Wagner, Charleston Harbor, SC.
• Federal expedition from Memphis, TN, to Grenada, MS, with skirmishes at:
  • Craven's Plantation, MS, (Aug 14), and at
  • Grenada, MS. (Aug 17).

Friday August 12 1864

• Joseph Anthony Mower, U.S.A., is appointed Maj. Gen.
• Federal operations in Madison County, AL, near Fayetteville, and New Market. (Aug 12-14)
• Skirmish at Van Buren, AR.
• Federal scout from Camp Anderson to Bald Mountain, CA. (Aug 8-12)
• Federal scout against guerrillas on the Fort Union road, near Fort Garland, the Colorado Territory. (Aug 12-16)
• Skirmishes at Baldwin, FL.
• Affair with Indians in the San Andres Mountains, the New Mexico Territory.
• The Confederate raider, CSS Tallahassee, captures six more Federal vessels off the coast of New Jersey and New York, causing alarm up and down the eastern seaboard.
• Federal operations in Ray and Carroll Counties, MO, and skirmish with guerrillas who attack the Yankees but are repulsed (Aug 12) at Fredericksburg, MO. (Aug 12-16)
• Skirmish at Cedar Creek, VA, as Lieut. Gen. Jubal A. Early, CSA, against Maj. Gen. Philip H. Sheridan, USA, begin to meet up with each other.

Saturday August 12 1865