The name of the intelligence officer who kept the "Union Intelligence Officer's" journal is unknown, as it probably should be. To use the term "spy" would probably be somewhat misleading, for the notebook consists of information culled largely from debriefings of deserters, prisoners of war, civilians, and refugees, rather than from the sorts of covert operations typically associated with spies. But it is clear that the man who kept the notebook was charged with obtaining, recording, and analyzing the immense volume of randomly scattered facts
The notebook includes meticulously recorded information on Confederate emplacements, strength, troop movements, and morale, and is made more valuable in that every informant is named and identified as to regiment and location. In many cases, the intelligence officer provided sketch maps of positions which, while skeletal, can be highly informative. At the end of the journal, perhaps in idle moments, he sketched out caricatures of a soldier, a civilian (?), and a Union shield.