Under Section 65 of the Indian Succession Act, 1925, a "privileged will" can be made by a soldier employed in an expedition or actual warfare, an airman so employed, or a mariner at sea, provided the testator has completed which minimum age?

Section 65 of the Indian Succession Act, 1925 creates a special category called "privileged wills," which grants relaxed formalities to soldiers, airmen, and mariners because of the exceptional and often dangerous circumstances they face during active duty. To qualify for this privilege, the testator must have completed at least 18 years of age and must be actively engaged in an expedition, warfare, or be at sea, rather than merely being a member of the armed forces in general. Section 66 further details how such wills can be executed, permitting them to be entirely handwritten and unsigned by the testator, or written by someone else but signed by the testator, without requiring any witnesses in either case. Remarkably, this provision even allows for oral privileged wills made before two witnesses present at the same time, though such an oral will automatically becomes invalid one month after the testator ceases to be in the qualifying dangerous situation. This stands in sharp contrast to Section 63, which governs "unprivileged wills" made by ordinary civilians and mandates strict formalities like signing at the end of the document and attestation by two witnesses.