The training an artist receives is not primarily about technique — the manipulation of paint or charcoal or ink. At a deeper level, it is about visual attention: how to look at something carefully enough to understand it, how to analyze the relationships between light and shadow that create apparent form, how to represent three-dimensional objects in two dimensions in ways that viewers will read correctly.
This training in visual analysis makes artists particularly acute observers of how appearances are constructed and what makes them convincing or unconvincing. When a painter sets out to represent a tank convincingly, he has to understand what a tank looks like — not just its general form but the specific visual details that distinguish a real tank from an inadequate representation. The same analytical faculty that allows an artist to represent something accurately allows him to understand what an adversary’s photographic interpreter would look for in determining whether what he sees is real.
The men who designed the 23rd’s visual deceptions were, in a meaningful sense, doing art. They were constructing appearances that would read as authentic to a specific audience — German photo interpreters and ground observers. The skills they were applying were the skills their art training had developed. The purpose was military, the technique was aesthetics.
This connection between artistic sensibility and deception capability was not fully articulated in the official documents of the period — it would have sounded too unusual. But it was understood by the men who selected the 23rd’s personnel and by the men who served in it. The unit was composed of people who thought about appearances professionally. The military used that professional orientation for purposes no art school curriculum had anticipated.