"forthcoming operation" is a correct and usable phrase in written English.
It can be used to refer to a planned or upcoming medical procedure or surgery. Example: "I will not be able to attend the meeting next week due to my forthcoming operation."
I suddenly feel very differently about my forthcoming operation.
The president seems to be getting very afraid about any forthcoming operation in Kandahar.
She spoke movingly afterwards about how Dr Mowlam had helped her face her forthcoming operation and its implications.
It was a convenient "cover" and allowed him to isolate himself and concentrate on his forthcoming "operation".
Some soldiers whose retirement was imminent have asked to remain on active duty until the forthcoming operation is completed.
In the time between her single mastectomy three years ago and the forthcoming operation to remove her ovaries, her relationship with her body has changed hugely.
Forthcoming Operations Management Research.
While Director General, he was responsible for the establishment of the United Kingdom's Joint Force Logistic Component for the forthcoming operations in Iraq and became involved in planning for the invasion of the country.
Due to the strategic importance of the island for the forthcoming operations against the Imperial Japanese forces in the South West Pacific Area, the small Australian occupation force used deception and camouflage to make the Japanese believe that a brigade-sized force was occupying the island.
But, on rare occasions, one does find a genuine exception, which brings us to the forthcoming book, "Operation Dark Heart: Spycraft and Special Ops on the Frontlines of Afghanistan -- and The Path to Victory" by Lt. Col. Anthony Shaffer (USA-Reserve).
In his forthcoming book, Operation Chaos: The Vietnam Deserters Who Fought the CIA, The Brainwashers, and Themselves, journalist Matthew Sweet explores the story of a specific group of young Americans who turned their back on their country and got more than they bargained for.
