The modern anti-aircraft guns will be shown in the text through several different perspectives in order to understand role, advantages, and disadvantages in today's application in the armed forces of the world. It is important to show the historical development of modern anti-aircraft artillery in order to gain insight into the speed of development and constructional needs to which it had to respond. The development took place following the evolution of threats in the airspace, and accordingly, it was determined how the development of this weapon will go. Based on facilities which this weapon defends they are divided into self-propelled systems, movable systems, and ship systems, each with several modifications supporting their purpose. The other division is according to the firing system, with which this weapon achieves so high efficiency and firepower. The most modern and automated systems with these capabilities will be presented along with the company behind the production and development of most modern artillery systems today. Also, most modern anti-aircraft systems which are used by the armed forces of the countries in the world will be shown, with their capabilities and tactical-technical characteristics. Systems that are operational in armed forces of the Republic of Croatia have been mentioned in order to review their advantages and disadvantages when compared to modern antiaircraft artillery in the world.