  Despite a growing recognition of the importance of insurgent group structure
on conflict outcomes, there is very little empirical research thereon. Though
this problem is rooted in the inaccessibility of data on militant group
structure, insurgents frequently publish large volumes of image data on the
internet. In this paper, I develop a new methodology that leverages this
abundant but underutilized source of data by automating the creation of a
social network graph based on co-appearance in photographs using deep learning.
Using a trove of 19,115 obituary images published online by the PKK, a Kurdish
militant group in Turkey, I demonstrate that an individual's centrality in the
resulting co-appearance network is closely correlated with their rank in the
insurgent group.
