In this diploma thesis, the topic is the comparison of the application of the beam and the calculation of the elements for shooting for each weapon separately. The paper describes the standard work of the calculating department during the initial preparation of elements for shooting and the application of patterns and equations for easy work. Also described is the M57 beam, which is the basic instrument of a fire platoon commander and is currently essential when conducting group artillery shooting. Furthermore, the work of the program for the initial preparation of elements for shooting 122 mm D30J howitzer is explained and the process of making the program itself is described in detail. The basic parts of the code of the mentioned program and how the VBA programming language works, in which everything was created, are indicated. A comparison of the work of the beam and the developed program was performed and their work was compared at intervals of 30, 60, 90, 120, 150 and 180 meters, assuming that the weapons are spaced apart perpendicular to the azimuth of shooting and the results are explained in the last chapter.