Here's a short story:

(Mental Floss) -- Over the centuries, people have had some very good reasons to dress up like a member of the opposite sex. 

After record-setting Olympics athlete Stella Walsh died in 1980, it was revealed that she had indeed been a man. 

And I'm not talking about people who live this way out of personal preference, or those who dress up for theater and entertainment. 

Here are just five examples. 

1. Cross-dressing to join the army 

Until recently, women have rarely been allowed to serve as soldiers. 

So what was a gal to do if she wanted to serve her country? Naturally, disguise herself as a man and join the troops. 

At least 400 Civil War soldiers were women in drag. These included Union Army soldier "Frank Thompson" (also known as Sarah Edmonds), whose small frame and feminine mannerisms (rather than causing suspicion) made her an ideal spy, as she could spy on the Confederates disguised as... a woman! 

She wasn't the first woman to don a male disguise and join the army, though. During the Revolutionary War, women fought as men on both sides. 

Hannah Snell, for example, joined the British army to find her husband, who had walked out on her to enlist. 

Once her true sex was discovered (thanks to a pesky groin injury), she became a national celebrity in Britain, and made a post-war career of performing in bars as the "Female Warrior." Mental Floss: The Confederacy's plan to conquer Latin America 

2. Cross-dressing to keep a royal family together  (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: Name the athlete who died and was then revelead that she was a man?
Guess: Stella Welsh
Confidence: <appropriate level of confidence in this guess>

Question: What year?
Guess: 1980
Confidence: <appropriate level of confidence in this guess>

Question: How many civil war soliders were women in drag?
Guess: at least 400
Confidence: <appropriate level of confidence in this guess>

Question: Who was Frank Thompson in "real"?
Guess: Sarah Edmonds
Confidence: <appropriate level of confidence in this guess>

Question: Was she the first woman to do a male disguise?
Guess: no
Confidence: <appropriate level of confidence in this guess>

Question: During what war did women fight as men?
Guess: revolutionary
Confidence: <appropriate level of confidence in this guess>

Question: Name a woman who joined the British Army?
Guess: Hannah Snell
Confidence: <appropriate level of confidence in this guess>

Question: and why did she do that?
Guess: to find her husband
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: what led to the discovery of her gender?

groin injury