None of whom were in his last administration, in fact, many of them, like Mattis and Kelly, and of course, his VP Pence, would support him or serve with him again. Some quit after he tried to use a violent riot to overturn the election. And now he is going to pardon those who were the insurrectionists. This America is now like Russia's, it is run for the rich. Just as Russian kids are being killed in Putin's war are losers and suckers for real, dying so the oligarchs can get richer, I would never suggest anyone serve in the military now, in specialties like infantry.
Learn a trade, sure.

The emperor and his oligarchs gather for the feast of the killing of the poor and their hopes.