I've been playing Chain of Command so that the senior officer in my platoon - i.e. the Lieutenant - is a Ranking Senior Leader so gets four Command Initiatives and a 12" radius. However, checking and rechecking the rules I may have been wrong about this but there is no clear guidance on what a Ranking Senior Leader actually is.
Is my Lieutenant just a 'normal' Senior Leader and the role of Ranking Senior Leader is for those occasions when a Captain or Major etc. makes an appearance in the game?