Active-Duty Military Personnel: 1,290,000

Army: 453,551
Navy: 332,322
Air Force: 318,698
Marine Corps: 172,577
Space Force: 8,879
National Guard and Reserve Members: 767,238

It is clear that the only option to increase the number of active duty military members is to re-implement the DRAFT.
During the Vietnam War, the United States drafted approximately 2.2 million men through the Selective Service System. This occurred between 1964 and 1973 when the U.S. relied on conscription to meet military personnel needs, as volunteer enlistments were not enough to sustain the demand for troops. THAT draft was highly controversial and faced increasing opposition as the war dragged on. In 1973, the draft was ended, and the U.S. military transitioned to an all-volunteer force.

As a voluntary enlistment active duty military member from 1965-1969 USAF. I have always contended that bringing back a military draft would put millions of families in the streets, protesting NOT WITH MY SONS AND DAUGHTERS!. Not for an unnecessary war. In my long-held opinion, The protests would stop a draft before it could be implemented.

Presidents since 1973 have realized that the citizens of the U.S. would not support a draft, particularly for unnecessary incursion into places like Gaza, Greenland, and Panama. All targets Trump appears to have on his delusional agenda.

"All of a sudden, those million, three hundred thousand active duty American troops they're just not going to be enough, now, are they. So now Trump's backed himself into the next corner bringing back the draft. Hasn't said it yet, Wait for it. If there is one thing that will guarantee riots in the streets that, oh, by the way, the rioters will win. It's another draft. The last one was expanded for Vietnam in the sixties, at a time when the nation still largely believed its government meant well and had judgment, and when parents would actually willingly let the government take their children to send them to die meaninglessly in a conflict we could not win or even influence, when we still believed in large part that the government's judgment on such things could be trusted. And still within three years there were daily protests and draft card burnings and violent underground terrorist organizations, and enough chaos to end Lyndon Johnson's presidency and force an end to the war and the draft within the decade. If Trump, if any president, for Gaza or Greenland or Panama or whatever else he pulls out of his own ass, If Trump or any president tried a draft, except in the event of something on the scale of World War Two, in these days, when the idea of people agreeing to be forced by the government to risk their lives in an optional war is met with only rage and uncontrollable laughter. If Trump actually tried a draft, and to clean out Gaza, he'd have to have a draft. If he actually did it, I'd give his presidency it a week to ten days before he and everybody in it were forced out of office. It may not have occurred to Trump yet that to do just Gaza, maybe just Greenland, or just Panama, it would require a draft.