So in 1939-40 the Suomus Independent Volunteer Aerial Squadron consists of the Misfits as seen in the Suomus Misfit Squadron light novels.
The squad changes over time between 1940 and 1944, and the only Misfit still in the squad is Haruka.
In April 1944 the Suomus Independent Volunteer Aerial Squadron consists of the pictured Witches as seen in the third Brave Witches Prequel light novel. They later become the 507th in December 1944.
From left to right they are:
Hanna Wind (Commanding Officer, Suomus)
Sakomizu Haruka (Commanding Officer in battle, Fuso)
Lee Andrea Archer (Liberion)
Kullamas Blengkam (Siamro)
Vesna Mikovic (Ostmark)
Also Misumi Miya (Hikari's school rival) joins them sometime in 1945.