Before the war, this was the biggest operation of its kind in central Europe.

They got four big operations to lease the entire space.

Our people and the French laid on a big operation.

During this time, there was no big military operations in Europe.

Some of these extremely big operations may be too much.

This used to be a big operation fifty years ago.

Some people prefer to see it as a big operation.

This is the biggest operation your people have had in years.

He was already case officer on a big operation too!

But he could never bring himself to risk bigger operations.