驰援 meaning in English

rush to the rescue

The emergency services stand ready to help if necessary
紧急救难处随时可以驰援。
The emergency services stand ready to help if called on
紧急救难处一获通知随时可以驰援。
The emergency services stand ( ie are ) ready to help if necessary
紧急救难处随时可以驰援
Chiang ordered an army group of twelve divisions under general liao yao - hsiang to the relief of the beleaguered city
蒋命今廖耀湘兵团十二个师驰援，以解锦州之围。