The members of each unit were divided into two groups, Senior members & Junior members.
Senior members could be regarded as the core of the unit, while Junior members could be regarded as the growing seeds.
Going out for missions would usually require a team of at least 1 Senior member and 2 Junior members as the veteran experience of a Senior member would be needed to deal with difficult situations, even if Junior members could easily deal with the muscle work.
Considering these facts made me wonder how was it possible for Ellona to become a Senior member from the get go, a Senior member of the Special unit at that, after all, the highest status a newbie like us could get should have been similar to Fredrick's, a Junior member position with the highest priority for promotion.
