During the Civil War, Holladay was an officer of the Confederate States Army, rising to the rank of colonel.
[2] After his retirement in 1899, Holladay spent time in Delaware, New York, and Virginia until failing health brought him back to his daughter's home in Raleigh, North Carolina, where he lived until he died and was buried at Raleigh in 1909.
Littlepage had a remarkable career as a diplomat in the service of the last Polish king, Stanisław August Poniatowski, and the Russian Empire.
[11] The Alexander Quarles Holladay Medal is awarded by the North Carolina State University as the highest honor it can bestow on members of its faculty.
[12] The first building built at North Carolina State University, Holladay Hall, was renamed after him in 1915.