The army is not alone in missing recruitment goals:

Senior Air Force, Navy and Marine Corps leaders have said they are hopeful they will meet or just slightly miss their recruiting goals for this year. But they said they will have to dip into their pool of delayed entry applicants, which will put them behind as they begin the next recruiting year.

In fact, recruitment prospects are so grim that 2022 is looking to be the worst recruiting year for the army since 1973, when the US military transitioned to an all-volunteer—i.e., nonconscripted—force. The days of the post-9/11 surge in enlistments are long gone, and noted for two lost wars in recent years, the US military now faces a new environment of declining public support. Moreover, with its recent drive to showcase its commitment to so-called woke policy goals, the military may be alienating conservatives—a group that has long been a reliable source of recruits and political support.

Ultimately, of course, the military can always get more troops by raising pay and lowering standards. The latter requires only a policy change. And, given the federal government's ability to essentially print money, the former is unlikely to be an insurmountable problem for the Pentagon either.