Historical Context
Constantine's life unfolded against the backdrop of the Abbasid campaigns to suppress revolts in the Caucasus. Beginning in 852, Caliph al-Mutawakkil entrusted the general Bugha al-Kabir (Buga-Turk) with subduing the region. Bugha's campaign opened in Armenia and included the sacking and burning of Tiflis; by 853 he had subdued much of the country and taken many Caucasian magnates and princes captive, sending them to the Abbasid capital at Samarra.
In 853–854, during this invasion, the eighty-five-year-old prince commanded the forces of Kartli alongside his son Tarkhuj against the invading Arab Muslims. The Georgians mounted fierce resistance but were defeated near Gori, and both Constantine and his son were captured.