The operation commenced on 22 June 1941, and proceeded without any incidents.

It seems to me the operation is proceeding according to plan.

The men in the trucks were reading newspapers as the operation proceeded, computerized and routine.

Before an operation proceeds several tests are usually to be performed.

There was a period of silence while this operation proceeded.

He said initial reports indicated that "our operations are proceeding according to plan."

The operation was proceeding in the usual fire-drill state of confusion.

The operation is begun by an instruction and proceeds basically independent of program control.

If consent in writing is not given the operation must not proceed.

"This operation will proceed in several stages, or steps," I said.