This graduation paper strives to clarify how much progress occured in artillery engagement by discovering and application of aiming devices on artillery weapons. Main idea in the introduction is the history of artillery weapons in general, its first appearance before more than 2000 years ago and its progress during the years. Furthermore, related to the title of the paper “Targeting devices of howitzer 122 mm D30“, the use and features of the howitzers are explained. In continuation are presented the types of aiming devices intended for directing these specific weapons, procedures of aiming and elements which are taken during those operations. Afterwards, devices for direct and indirect aiming are described in more detail and followed by fitting examples and their explanations. The final part of the paper talks about the verification and validation procedures as well as about the importance of maintenance of those devices.