Brig. Gen. David Wood, director, Joint Staff-Pa Joint

Brig. Gen. David Wood, director, Joint Staff-Pa Joint Force Headquarters (center), reads aloud the accomplishments of Pennsylvania's Octavius V. Catto award recipients, Sgt. 1st Class Melissa Mae Singer (left), 28th Infantry Headquarters and Sgt. Laura Colvin, A Company 128th BSB. The ceremony was held at the Philadelphia Union League, Philadelphia, Pa., Feb. 17, 2018. (U.S. Air National Guard photo by Master Sgt. Chris Botzum)

David Octavius Hill was a Scottish painter and photographer. He was a pioneer of photography in Scotland and is best known for his collaboration with Robert Adamson in which they produced some of the most important early photographs of Scotland.

In 1843, Hill was commissioned to paint a group portrait of the leaders of the Free Church of Scotland, which became known as the "Disruption Assembly" painting. He then decided to photograph the same people in order to have a more accurate representation of the individuals. This commission led him to take up photography and he teamed up with Robert Adamson, who was a master of the new collodion process. Together, they produced a large body of work that depicted the people and landscapes of Scotland during the mid-19th century. Their photographs are considered some of the most important early photographs of Scotland, and are widely recognized for their technical excellence and artistry.