China and North Korea is the answer
Explanation:
<u>Military installations can be defined as the locations directly operated by the military itself.</u> It is used for many purposes manifested below:
* It provides accommodation facilities to the military.
* It provides training facilities for the military.
* Military can base their equipment there in these military installations.
* Military can conduct their operations secretly from these installation.
* They are also used to store food for the military.
* Some military installation are also used for aviation purposes and known as air bases.
* Military installation when used for military ships are known as naval bases.
