The Aircraft that usually operated by some artificial intelligence is referred as a “Drone”. Any aircraft which is not having Pilot on board is termed as “Unmanned Aerial Vehicle”. As technology is increasing day by day all sectors including aviation too has shown some significant changes. There are many types of drones based on their uses also having different size and shapes based on their uses. For example let say quad copters are used for weather surveillance, aerial photography, etc. On other hand drones are also widely used in military operations or in defence sector. Well developed nations are using drones and unmanned aerial vehicles since long time; but when it comes to small nations whose economy is still under developing stage, they are also now advancing towards artificial intelligence in defence sector and it is expected that after 5-10 years all the countries around the world will use drones and UAVs in their defence.