Talk:Sopwith Spiderwasp/@comment-99.150.162.211-20131007224314

It should be noted that these (and probably other boss strike reward units) have minimum level requirements for ranking up, even after you get them.

For example: At level 12 I got a rank 2 plane. I earned sufficient SP (and resources etc) for rank 3. The game gives me a message saying I need to be level 20 before I can promote it.