Gun Drills is an Android app developed by Hector Santiago that generates deflection, charge, and elevation for the 60mm, 81mm, and 120mm mortars. Using the current standards of TCMarchon Pages 8-1, the app randomly generates small deflection and elevation changes of no more than 60 mils and 95 mils, respectively. For large deflection and elevation changes, the app generates data up to 300 mils and 200 mils, respectively.

This app is a great tool for those conducting gun drills outside their company area, in the field, or when conducting a MORTEP. And the best part is that no internet connection is required to fully use the app. Overall, Gun Drills is a useful and reliable tool for those in need of mortar calculations.