I know that once you enter a career you age 4 years regardless of events. I'm curious as to how long a term is after that fact. I'm assuming that the time between choosing your specialisation and career advancement counts as 1 full year but I'm not sure. Sorry if this seems unclear. Maybe I should put it this way, could I theoretically advance within the Army from Private to Sergeant Major within that 4 year period or does every rank after my first four count as 1 years time?