There is a certain picture in Battlestar Galactica that, whenever we see it, someone is touching it in some way, like they are showing respect. What is that picture?
In Season 1 Episode 1 "33", we see the Pilots of Galactica touching a photo of a lone soldier — kneeling in utter defeat surveying a scene of total devastation in front of him — as they file out of the Pilot’s Ready Room. This photo has become known by the description used by the BSG Production Department as the “Unknown Soldier” photo.
Ronald D. Moore explains the origin of the “Unknown Soldier” photo in a Q&A response from his, now defunct, Ron Moore’s Blog Section on the old Scifi channel Battlestar Galactica website.
The original base photo for the image was taken at the Vancouver Film Studio’s helipad situated on the roof of building C. This was the building that housed the Battlestar Galactica production offices. The photo clearly shows the Vancouver Film Studio flags in the background along with the “Kobol” flag (which was later rotated and moved to the right) flying above the soldier’s head.
The picture is there to remind every person on Galactica about their losses and their lives before the attacks on Caprica.