adjutant, auxiliary, aide-de-camp, assistant, helper, assister, aider, assistor, adjuvant, subsidiary, more...

enemy, opponent, foe

speechwriter, advisor, counselor, spokesman, spokeswoman, press secretary, chief of staff, campaign manager, more...

former, military, chief, top, personal, young, senior, naval, presidential, legislative, close

right-hand person,   senator's gofer,   white house staffer,   senator's staffer,   political assistant,   a helper,   senate helper,   royal assistant,   senator's helper,   legislative staffer