The work of war is often remembered through battles, commanders, and acts of courage. Far less attention is paid to the painstaking labor that made those events possible. Nancy Finston’s The 20th PID Book: A Rare Look at a WWII Photo Intelligence Detachment fills in those gaps. Part family tribute, part military history, and part restored archival document, the book preserves the story of the men who studied aerial photographs and turned what they saw into usable battlefield intelligence.

Finston’s father, William J. Snoddon, served in the 20th Photo Intelligence Detachment of the Ninth Air Force. Like many veterans, he spoke little about his wartime service. What remained was a metal box of documents and a commemorative book assembled by members of the unit in 1945. Finston reproduces that keepsake here, adding captions, enlargements, definitions, and historical context that allow contemporary readers to understand material originally created by and for specialists.