§ 671.
(b)
In time of war or a national emergency declared by Congress or the President, the period of required basic training (or its equivalent) may not (except as provided in subsection (c)) be less than 12 weeks.
([Aug. 10, 1956, ch. 1041], [70A Stat. 27]; [Pub. L. 94–106, title VIII, § 802(b)], Oct. 7, 1975, [89 Stat. 537]; [Pub. L. 99–661, div. A, title V, § 501], Nov. 14, 1986, [100 Stat. 3863]; [Pub. L. 103–160, div. A, title V, § 511], Nov. 30, 1993, [107 Stat. 1648]; [Pub. L. 107–296, title XVII, § 1704(b)(1)], Nov. 25, 2002, [116 Stat. 2314]; [Pub. L. 114–328, div. A, title X, § 1081(b)(1)(A)(v)], Dec. 23, 2016, [130 Stat. 2418].)