The Kasukabe Defence Force (Kasukabe Defense Organization) (かすかべ防衛隊), also known as the Kazhukids in the Vitello and Phuuz dubs, is an "organization" that Shin-chan and his friends created in episode 143.
The purpose of this group was to promote peace in the city of Kasukabe. However, this so-called organization is little more than just a name for Shin-chan's clique and often they hardly do anything meaningful during their operations, but they ironically cause many troubles when they do "defend". Their secret base is located at kindergarten teacher Midori Ishizaka's house, and she is also known as the group's manager, much to her chagrin.
Their rival is the Kasukabe Guardian Force, which appeared in several episodes.
In the English Funimation dub, known as "Kasukabe Defense Corp" or "Haruhibu Military Corp".