File consists of one photograph album containing photographs of a military experiment in which Nouwen participated, during his time as a military chaplain. The photographs show some of the experiment and training, but most photographs are candid photographs of those also involved in the exercise while off-duty. These candid photographs include mealtimes, cleaning, and socializing. Nouwen is included in six photographs.
Also included in the album is a card thanking the participants of the experiment. The phrase is, "Aangeboden door de Commissaris der Koningin in de Provincie Gelderland, in samenwerking met de Stichting Bevordering Bescherming Bevolking, aan de deelnemers aan oefening Copex" ["Offered by the Queen's Commissioner in the Province of Gelderland, in collaboration with the Foundation for Promoting Civil Defence, to the participants in exercise Copex"]. Henri Nouwen signed his card.