Civil Union is out of the unraced Photograph (Unbridled's Song), whose first eight foals are all by War Front. Civil Union is a full sister to War Dispatch, a Group winner and Group 1-placed in France, and to George Patton, Group-placed in France.

Second dam Black Speck (Arch) is the dam of War Flag and of Lines of Battle (War Front), winner of the Gr.2 UAE Derby and, racing as Helene Super Star, the Gr.1 Champions & Chater Cup in Hong Kong, where he was champion stayer.

Third dam Andover Way (His Majesty) produced the influential sire Dynaformer (Roberto) and the dam of Offlee Wild (Wild Again), a Grade 1-winning sire.

Photograph has a two-year-old full brother, Battle of Britain, and a weanling full brother named Operation Torch. Her most recent cover was by Tapit.