裨補 is read as ひほ (hiho) and means support.
ひほ
hiho
りっこうほ
candidacy
こうほ
ぞうほ
extending (e.g. a book)
だいとうりょうこうほ
presidential candidate
ふくだいとうりょうこうほ
candidate for vice-president
てんぽ
making up (a deficit, loss, etc.)
はんじほ
assistant judge
こくむじかんほ
Assistant Secretary of State
そうほ
complement
がいこうかんほ
probationary diplomat
しょきほ
assistant clerk
たいりつこうほ
rival candidate