10 October 1916: Punitive Expedition Report
This expedition was organized and its operations conducted under instructions contained in the following telegrams and letters:

1st.

Fort Sam Houston, Texas,
March 11, 1916

General Pershing,
Fort Bliss, Texas.

Secretary of War has designated you to command expedition into Mexico to capture Villa and his bandits. There will be two columns, one to enter from Columbus and one from Hachita, via Culberson's. Rachita column will consist of Seventh Cavalry, Tenth Cavalry (less two troops) and one battery horse artillery. Columbus column will consist of Thirteenth Cavelry (less one troop) a regiment of cavalry from the east, one battery of horse artillery, one company of engineers and First Aero Squadron with eight aeroplenes. Reinforced brigade of Sixth Infantry, Sixteenth Infantry, First Battalion Fourth Field Artillery and auxiliary troops will follow Columbus column. Two companies of engineers will be ordered to Fort Bliss awaiting further orders. Necessary signal corps will be ordered from here. Will furnish you War Department instructions later. Have you any recommendations to make?....
Complete 113-page report at the link.