The thesis topic “Fostering the working capacity of national defense – security for key officer staff at communes, wards and towns in the Military Zone 3 today” is a matter which has been accumulated knowledge and experience of 19 years as a lecturer of the party’s work and political work at the Academy of Politics and Political Officer College, directly teaching, researching the party’s work and political work in the work of the local military and defense, including education and fostering knowledge on national defense – security. In the process of learning, working, the fellow proactively researches on practical education and fostering capacity of national defense – security for the key officer staff at communes, wards and towns in many places, especially in the areas of Military Zone 3;