Question

How a computer use in the field of sport and military

Answer 1

by seeing their enemy on border

Answer 2

Computers are used in military for communications through radar,controlling missiles etc.They are also used for planning missions.Navy and airforce take advantage of Computers for attack calculations and controlling giant weapon gadgets.
In sports they are used in high speed cameras for capturing minute details.
In many team-based games real time planing is done with the help of Computers by analyzing the current situation and using probabilities.
They are also used for training