noun which may take the genitive case particle 'no'
isolated and helpless; alone and unassisted
Describes a situation where one is cut off from support and must face difficulties alone. Often used in military, competitive, or personal crisis contexts.
敵陣の中で孤立無援の状態に陥った。
They fell into a state of being isolated and helpless behind enemy lines.
彼は会社の中で孤立無援だった。
He was alone and unassisted within the company.