Nixon did this when the Postal Service went on strike in 1970. He brought in 23,000 national guard troops to New York to deliver the mail.

They failed, miserably, because they didn’t know how to do the job. There’s clips of interviews with some of them at the time, I remember one, the soldier was trying to sort the mail and laughing about how he didn’t understand how the regular guy could do in a couple hours what took him almost all day.

Good luck to him, but he’s gonna find out quick that soldiers aren’t longshoremen.