What is the largest number of command levels ever knocked out in a single battle?

O'Neill came down the steps from the command level to stand next to him.

It also made sense since they had two combat-savvy officers, both of command level, on the ship.

His background includes various duties in air traffic control at the unit and major command levels.

I believe I can break them from the command level.

We went up to the command level and picked our way into the control room.

What I have to say must be discussed at the command level.

She nodded and started up the ladder to the command level, turning to watch him working at his console.

"It seems to work well enough on the command level."

Stepping down to the command level again, she caught up Cavit's eyes with her own.