Complex sentence: The act also established the position of Vice Chairman of the Joint Chiefs of Staff and simplified the chain of command, also states that the Chairman of the Joint Chief of Staff and its Vice cannot be a representative from the same service branch.
Split into simpler sentences: The act also established the position of Vice Chairman of the Joint Chiefs of Staff and simplified the chain of command. Additionally, it states that the Chairman of the Joint Chiefs of Staff and its Vice cannot be representatives from the same service branch.