Wouldn't Wilma Bishop have retired by the time that the 1st season of Strike Witches ended?
Actually if I can recall, she retired at age 20 and ended up marrying someone 30 years her senior. (She's got a thing for older men according to her profile)
It also mentions that she was the total opposite of Lynette as far as personality goes lol.
Royal Farawayland Air Force(RFAF), Scotishfold Cat Familiar
Member of the 501st Joint Strike Fighter Wing and older sister of Sargent Lynette Bishop.
Quite the opposite of her younger sister, she's usually positively a bundle of energy.
They both trained in the New World Brittannian Colony of Farawayland, undergoing a lengthy training and instruction period; they were dispatched to Britiannia as frontline troops as soon as their training was complete.
Exhibiting a bright, often impish, personality, she loves to eat sweets that her sister cooks. However, she seems to subsist only on those and meat, much to her sister's concern.
While skilled, she never demonstrated any outstanding talent or accomplished any particularly noteworthy deeds, withdrawing safely from active duty at age 20.
She rather surprised everyone after her discharge by marrying her "Uncle" from the service, a ranking Farawayland officer 30 years her senior.
[As with the others, translated to the best of my ability from Fumikane's Blog entry]
I actually translated these about a month and a half ago on the AS forums. I'll repost the translations here I guess.
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Wilma Bishop (16 years old in '39) Service: Royal Farawayland Air Force Familiar: Scottish Fold
The elder sister of Sgt. Lynette Bishop in the 501st Joint Fighter Wing.
Unlike her sister, Wilma is like a vibrant ball of energy. Knowing that the enlistment procedures and training period for the Britannian Air Force were long, Wilma went to the Britannian Commonwealth nation Farawayland alone, and after receiving her mechanized air infantry qualifications there, returned to Europe as part of a deployment to aid in the defense of Britannia.
Naturally bright and playful, at home she is not unlike her sister, and loves both making and eating sweets. However, one constant source of worry for her is how the eating part affects her weight.
As an air infantryman, she did not have any particularly noteworthy skills, and never participated in any large operations. She continued fighting until she was 20, at which point she retired.
Wilma had always shown a liking for older men, and after retiring, she married a Farawayland Air Force officer 30 years her senior, surprising all of her family and friends.