What Is the Maximum Age to Enlist in the U.S. Military in 2026? The maximum age to enlist in us military branches varies depending on where you want to serve — and in 2026, several branches raised their limits, opening the door for more Americans than ever before. Here is a quick breakdown of the current maximum enlistment ages by branch: Branch Maximum Enlistment Age … [Read more...] about What Is the Maximum Age to Enlist in the U.S. Military in 2026?