The phrase "audacious operation" is correct and usable in written English.
It can be used to describe a bold or daring action, often in a context where risk is involved.
Example: "The team executed an audacious operation to rescue the hostages from the heavily guarded compound."
Alternatives: "bold endeavor" or "daring mission".
In September, 2010, Van der Werf organised an audacious operation to free dolphins at Taiji in Japan.
And we worried that if we did that, if we violated their sovereignty with that audacious operation, the government of Pakistan was likely to close those supply routes.
In an audacious operation that unfolded like a Hollywood thriller, the Navy Seals executed a daring raid deep into Pakistan to kill Osama bin Laden.
Two fellow students are looking for an associate to witness their most audacious operation – but they stress that what Meredith is to observe may change his life forever.
Moulin succumbed to torture soon afterwards while Aubrac, after several months imprisonment, escaped thanks to an audacious operation mounted by his wife.
In this story, Russia waged a sophisticated and audacious operation to subvert American elections and install a President of its choice it pulled off a coup.
The assassination of Reinhard Heydrich is recognised as one of the most audacious operations of the second world war.
The assault was the latest in a series of audacious operations by insurgents meant to shatter the calm of the Afghan capital.
It has captured public attention with audacious operations that have included stealing the sword of liberator Simon Bolivar from a museum, breaking into an army munitions depot and taking thousands of weapons, and taking over the Dominican Republic Embassy for two months.
Generally British Commonwealth units on their first tour in Borneo were not allowed to undertake such audacious operations however, and consequently, although highly successful the actions of 3 RAR in their first and only tour may not have been representative of those by more experienced Gurkha and British battalions.
China secretly inserted surveillance microchips into servers used by major technology companies, including Apple and Amazon.com, in an audacious military operation likely to further inflame trade tensions between the United States and its leading source of electronics components and products, Bloomberg Businessweek reported Thursday morning.
