Yuma Crossing
Immediately after the Mexican–American War in 1848, the U.S. Army built Fort Yuma here to protect travelers from Indians raiding the area. It was the center point of conflict in the Yuma War of 1850–53. From 1864–1890, the fort and nearby facilities was the main army base to support the US Army's efforts to control the Indians throughout the greater southwest.
Sino-Burmese War (1765–69)
The Qing kept a heavy military lineup in the border areas of Yunnan for about one decade in an attempt to wage another war while imposing a ban on inter-border trade for two decades. The Burmese, too, were preoccupied with the Chinese threat, and kept a series of garrisons along the border. Twenty years later, when Burma and China resumed a diplomatic relationship in 1790, the Qing unilaterally viewed the act as Burmese submission, and claimed victory. Ultimately the main beneficiaries of this war were the Siamese, who reclaimed most of their territories in the next three years after having lost their capital Ayutthaya to the Burmese in 1767.