(Also I'd be highly surprised if they haven't run the numbers and calculated scores for which specific units contain the most non-citizens, new citizens, and other untermensch. So from their perspective it's basically a 2-for-1)
But friends and family of military already knew before that.
This will rater end as "Vietnam 2.0" with this move: Lot of military equipment locked-in for years in a conflict you cant win.
If the Marines actually face well-armed zealots, it's going to look far too much like WW II in the Pacific. Are the US-ians ready to re-experience such casualties? Cuz I expect the zealots would be willing to do so. And Ukraine has shown the power of man-portable weaponry against the traditional tools of 20th century military operations.
Iranian missile capability is almost extinguished as it is, and drones are to be defended from using Ukrainian interceptors - first line of defence, on the ground on the coast, and second line, on ships themselves.
Ah, and Iranian electric grid needs to be knocked out, and kept like that. It was done easily in Iraq in 1991. It alone prevents nuclear enrichment for the lack of electricity.
It will perhaps never result in victory, but sustain suppression may be enough, Cuba-like.