Everyone stared at the child, and he retreated once more behind his mother's back.
She'd retreated behind a wall of ice to protect herself.
Then he began to fire, and his companion in turn retreated behind him.
So he'd already retreated behind the wall that separated them.
Annie tried to make room for him, but the only way was to retreat behind his desk.
She did not retreat behind the curtains immediately, however, because her skills were still needed.
When she looked back, Ruth had retreated again, behind the screen.
China seemed about ready to retreat back behind its traditional closed doors and no one knew who to talk to to try to prevent it.
He retreated behind the 40 to avoid a defender then cut back to the right.
She had retreated behind the iron mask of her training.