MILITARY INTELLIGENCE POST U.S. Military Personnel Strength and Readiness Trends (2020-2024) Active-duty U.S. military personnel have remained relatively stable at approximately 1.3 million across all branches, though recruitment challenges have intensified—the Army missed recruitment targets in 2022 for the first time since 1973, attributing shortfalls to declining youth eligibility rates (only 23% of Americans age 17-24 meet military standards without waiver), obesity, substance abuse, and increased competition from civilian tech sectors offering comparable salaries. This metric matters because personnel readiness directly affects force projection capability; historically, the Vietnam War saw 2.7 million active personnel, while the post-9/11 peak reached 1.4 million—current stagnation amid higher training costs and extended deployments creates structural challenges for sustaining peer-conflict readiness against China and Russia. The quality-over-quantity shift reflects broader force modernization, but recruitment shortfalls constrain both operational capacity and strategic flexibility in multi-theater scenarios.