Quick Scoop

You can be drafted in the U.S. between ages 17 and 44 by federal law, but in any realistic modern scenario the Selective Service System would only call men ages 18–25, with 20‑year‑olds first.

Core age rule

  • Registration requirement: Almost all male U.S. citizens and male immigrants (permanent residents, refugees, asylum seekers, undocumented) ages 18 through 25 must register with the Selective Service within 30 days of their 18th birthday.
  • Draft liability (practical): If a draft were held today, the first group called would be 20‑year‑olds (or those turning 20 during the lottery year). Each year a man drops one priority category until he turns 26 , at which point he is “over the age of liability for the draft”.
  • Statutory militia range (theoretical): Title 10 U.S.C. § 246 defines the militia as all able‑bodied males 17–44 (and female National Guard members), meaning Congress could legislate a conscription that reaches as young as 17 and as old as 44 if a national emergency demanded it.

How the priority order would work (if drafted now)

  1. Priority 1: Men 20 (or turning 20) in the lottery year
  2. Priority 2: Men 21 (starting Jan. 1 of the year they turn 21)
  3. Priority 3–6: Men 22, 23, 24, 25 (one category per year)
  4. Priority 7: Men 19 , then 18 (younger registrants are called after the 20–25 cohort)
  5. Over 26: No longer in the Selective Service draft pool unless Congress expands the law.

Key “what‑if” nuances

  • Women: Current law requires only men to register. A 2021 House amendment that would have made “all Americans” 18–25 register was removed before passage, so women are not currently draft‑eligible under the active Selective Service system.
  • Congressional power: The draft cannot happen without Congress passing new legislation and the President signing it. Congress could raise or lower the age limits (theoretically even beyond 44) if it deems a crisis severe enough.
  • Recent news (2026): The House passed a measure to automatically register eligible men for Selective Service (updating the system for the first time in decades), and the White House has not ruled out keeping “all options on the table” amid escalating geopolitical tensions, but no active draft exists in 2026.

Quick reference table (HTML)

[1] [1] [1]
AgeRegistration required?Priority if draft held todayCan be conscripted by law?
17NoNot in current SSS poolYes (militia definition)
18Yes (within 30 days)Called after 20–25 cohortYes
19YesCalled after 20–25 cohortYes
20YesFirst calledYes
21–25YesCalled in descending order (21,22…)Yes
26+No new registrationOutside SSS draft liabilityTheoretically yes (up to 44) if Congress acts
44NoNot in SSS poolUpper statutory limit (militia)

Why this matters now

The topic has trending attention in 2026 because of:

  • A new automatic registration bill moving through Congress.
  • Public speculation about aPossible draft** amid Iran‑related tensions and statements that the Trump administration is “keeping all options on the table”.
  • Ongoing forum discussions about whether the age range could expand beyond 25 in a severe emergency.

“While the SSS is not actively drafting, if Congress did enact a draft, twenty‑year‑olds would be the first men to be drafted… The SSS has no plan in place to draft any man over 25, but the US Code means that the government could conscript men older than 25.” — Reddit TIL thread summarizing federal law.

Bottom line: For all practical purposes today, 18–25 is the draft age window, with 20 being the first to go. But the law leaves the door open for Congress to call 17–44 if a national emergency ever warrants it. Information gathered from public forums or data available on the internet and portrayed here.