Andrew W. McCormick was born on February 3, 1830, in Waynesburg, Pennsylvania, to Robert McCormick and Lavinia Wilson. He grew up and attended school in Waynesburg. As he later recalled, he “labored in the fields and forests during the spring, summer and fall of each year, from the age of nine or ten, and attended the public school during the winter months.” He eventually began work at a local newspaper office, where he “learned the art of a compositor, pressman, and job printer.”
He married Alice J. Leckliter on December 25, 1851, and they had at least six children: Emma, born on October 7, 1852; Frank, born around 1855; Andrew, born around 1858; Lynn, born around 1861; Ida, born around 1866; and Mary, born around 1869. He moved to Parkersburg, Virginia (present-day West Virginia), in 1852. He supported the Democratic Party, and he served as editor of the Parkersburg News. He moved to Marietta, Ohio, in 1853, and he began editing the Marietta Republican soon afterward. He supported Democratic candidate James Buchanan in the presidential election of 1856. The following year, after Buchanan’s inauguration, he received an appointment as a local postmaster. In 1860, he supported Northern Democratic candidate Stephen Douglas.
In October 1861, he received a commission as a captain in Company G of the 77th Ohio Infantry. In January 1862, he told his wife that he had “spent ten of the happiest years of my life with you, and would gladly stay at home all my days—did not my duty to my country call me to the field.” He later declared that he “had been a strong advocate of a vigorous prosecution of the war from the day the army fired on Fort Sumter.” He was an “ardent friend and supporter of the Union, no matter from what quarter assailed.”
The 77th Ohio took part in the Battle of Shiloh. He was wounded in the right arm near Falling Timber, Tennessee, on April 8, 1862, and Confederates captured him soon afterwards. Four days later, he assured his wife that he was “doing well, and [was] very well treated.” Confederates exchanged him about six months later, and he returned home to Marietta to recover. He delivered a speech in November 1862, insisting that imprisoned Union soldiers “had no blankets furnished them, and many had to sleep on the bare ground. Their rations were very poor—a scant allowance of bad flour or corn meal, and about half a pound per day of bacon, much of it spoiled so badly it could not be used.”
He opposed emancipation, and he believed President Abraham Lincoln’s Emancipation Proclamation would “amount to but little.” He believed “this war should be conducted simply to uphold the Constitution and the Union, without reference to the negro question. But it will not prevent him from doing his duty in defense and support of the country.” In September 1863, he declared that he was a "Union Democrat--a war man--and in favor of white men doing the fighting and voting. I have no confidence in the negro as a soldier and do not fellowship him as a citizen." McCormick eventually rejoined his regiment. He was captured again in April 1864, and he mustered out on March 12, 1865.
He returned to Marietta after the war. He applied for a federal pension in May 1865 and eventually secured one. By August 1865, he was working as a real estate agent and “solicitor for pensions, bounty, back pay, and claims for soldiers.” A local editor noted that his building was “crowded with business.” He became a probate judge in the 1860s. By 1870, he owned $1,500 of real estate and $800 of personal property. They moved to Cincinnati, Ohio, in the 1870s, and McCormick worked as a lawyer. He played an active role in local veterans’ organizations. He died of myocarditis in Cincinnati on March 8, 1905.