User blog comment:F0XTRAUT/IOS Top 50 Players Statistics/@comment-35015268-20191010153614/@comment-35115325-20191018022923

Well actually, as I have found out that some players put cossacks in their empty hangers if they don’t have enough robots to put in such hangers.

Or it could be like you said, but these players don’t put pilots on these cossacks - their just there to fill the empty space. I doubt that these players use them.