Bigotry and hypocrisy are rife on this topic. Gay people of both genders are already serving, and have done since time immemorial. Their comrades in arms either know of their presence and are unfazed by it, or are too dull to notice, but they are and always have been there.
As for walking a mile in a man's shoes, so what if he is upset? You have his shoes and a mile head start!