Women that were part of the 3M program worked up to 70 hours per week over the course of three years and assisted in creating more than 40,000 maps of all types. The maps that were created were hand drawn and required approximately 600 hours of cartographic labor for each new map. Reference materials included foreign maps, aerial photos, and other information to chart strategic locations, churches, schools, land contours, bodies of water, and roads. Interpretation of aerial images was very important as in many places it was hard to gain intelligence on the ground. The maps that were created included maps for the
D-Day invasion, the
Battle of the Bulge and initiatives in and around Fiume, Italy. At the end of the war women made up 58% of the Army Map Service. == References ==