That could be some kind of attack formation, but they don't look like a trained army.

Another quick shift of positions created a new attack formation.

"They have taken up attack formation around the station."

Was this an attack formation, or did they have some kind of need to be together?

They were advancing in attack formation, and heading for the trees.

Thankfully, it was only a single plane, not an entire attack formation.

It'd be thick, grim, and there was no point even thinking about attack formations.

"It could be the beginning of an attack formation."

The rest of the attack formation followed him up.

But occasionally a whole attack formation of these beautiful animals are seen "flying" along the wall.