Complex sentence: The techniques continued however to be taught in a few "savate boxing" clubs that reopened in between the two wars and managed to survive World War II. Cane fighting techniques of the late 1950s and 1960s were influenced by a few skilled individuals who revived it.
Split into simpler sentences: The techniques continued however to be taught in a few "savate boxing" clubs that reopened in between the two wars and managed to survived the 2nd World war. The cane fighting technique in the late 50's and 60's was influenced by a few skilled individuals who revived it.