Using a FADAC (field artillery directional analog computer) I am preparing the necessary instructions for the battery to fire a salvo. The FADAC computer was just beginning to be used in the field, replacing the charts, sliderules and firing tables we had used to compute gun settings. The FADAC was bulky, difficult to operate, temperamental and impossible to get repaired because parts and training in repairs did not exist. Due to these problems we used the computer as a backup to our traditional method of computing gun and shell settings. Read the full story. https://vietnamsoldier.com/accurate-artillery-fire-2/