As the Chinese Civil War continued without truce, the government built up military fortifications throughout Taiwan. Within this effort, KMT veterans built the now famous Central Cross-Island Highway through the Taroko Gorge in the 1950s. The two sides would continue to engage in sporadic military clashes with seldom publicized details well into the 1960s on the China coastal islands with an unknown number of night raids. During the Second Taiwan Strait Crisis in September 1958, Taiwan's landscape saw Nike-Hercules missile batteries added, with the formation of the 1st Missile Battalion Chinese Army that would not be deactivated until 1997. Newer generations of missile batteries have since replaced the Nike Hercules systems throughout the island.