The bully has officially ordered the US armed forces to ban transgender people.
Courts will surely block this, at least for a while. What if it does take effect?
Americans, if you are transgender, you can serve our country better by campaigning against the bully's right-wing extremist movement (the Republican Party) than by being in the military. Being in the military makes you available for him to attack other countries. As for defending our country military, that's hardly necessary at present, since no army is going to attack the US.
If you are not transgender, all that applies to you, too.