The phrase "a former operation" is correct and usable in written English.
It can be used to refer to an operation that has previously taken place or been conducted, often in a medical, military, or business context.
Example: "The patient is recovering well after a former operation to remove the tumor."
Alternatives: "a previous operation" or "an earlier operation".
The new charges were filed against a former operations manager, Daniel Bonventre; two former investment advisory employees, Annette Bongiorno and Joann Crupi; and two former computer programmers, Jerome O'Hara and George Perez.
Stiuso, a former operations chief of the intelligence secretariat, ran a vast wire-tapping network that he built up under Férnandez and her predecessor and husband, Néstor Kirchner.
In a separate development, the FBI announced that it had arrested a former operations director of Madoff's firm, Daniel Bonventre, at his New York home.
"We did great things to support the U.S. military overseas -- we did better than they could support themselves," said Charles J. Fiala, a former operations officer for KBR.
To them, he is a former operations whiz at General Electric who can bring new managerial discipline to Chrysler, and make the struggling Detroit automaker hum again.
Like all large institutions, C.I.A. headquarters, in Langley, Virginia, is full of water-cooler gossip, and a retired clandestine officer told me this summer that the story about a former operations officer faking the documents is making the rounds.
The agency also believes, these officials said, that Muhammad Salah, a Qaeda lieutenant and a former operations officer for Egyptian Islamic Jihad, was killed in mid-November in a bombing also in the Khost area.
"We did have one incident where a screw fell and pinged one, and it just went poof," Anamaria Effler, a former operations specialist at the Hanford site, told me.
Previously, a former operations director, Michael J. Lawler, 57, of Solvay, N.Y., pleaded guilty to wire fraud charges in connection with fraudulent accounting practices at the Penny Curtiss Baking Company, a subsidiary of Penn Traffic.
