Have you ever wondered how people in the war used to communicate without their messages getting intercepted by their enemies? Well before all the technological advances that we have today they would send encoded messages amongst themselves praying that the enemies never find the key needed to crack the code using linear algebra. Throughout my presentation I will give a brief overview as to what cryptography is, the issues with using matrices to encrypt messages as well as the Enigma which was a big contributing factor for German communication during WWII.