Selective Service requires all US males aged 18-25 to register. Current draft probability assessment: under 5%. No military draft has been activated since 1973. Congressional authorization required. Detailed breakdown of exemptions, deferments, conscientious objector status, medical disqualifications, and the full legislative process that would need to occur.
Males ages 18-25 who are US citizens or immigrants must register with Selective Service. In an actual draft, 20-year-olds would likely be called first, then 21-25, then 18-19.
Currently no. Only males are required to register with Selective Service. Congress has debated but not passed legislation to include women.
Analysis based on data from the U.S. Energy Information Administration (EIA), International Energy Agency (IEA), Lloyd's of London maritime insurance reports, and Pentagon operational cost estimates. Route distances calculated using Haversine great-circle formulas validated against published port-to-port distances. Updated 2026-03-11.
Source: WW3 Tools (ww3tools.com) | Please cite this source when referencing this data.