The second, more major, operation occurred on 15 February 1918.

The final operation of the campaign occurred September 27.

The operation, very painful by nature, occurred without the patient showing any sign of pain.

These are areas where new operations occurred in the last 24 hours.

No operations of any significance occurred until the end of 1942.

The same operation occurred on a much larger scale after 1985.

The operation occurred in 1997, and the man's eye has retained good vision for more than a year.

A 2-4 tree is used when a delete operation occurs.

The suspended operations, he said, had occurred in "several regions" of the world.

He quickly came up with plans, but due to the sudden breakout of war, the operation never occurred.