Amaki Suwa is a Strike Witch in the Army Air Force 47th Squadron.

Spoiler

Appeared in episode 12 of the anime. Like Yoshika, she is a Witch from Fuso. She gives Yoshika a letter from her father Dr. Miyafuji, but whether or not this means he is alive is unclear. This scene was repeated in episode 1 of the Strike Witches 2.

(Source: Wikipedia)