In the late 1800s, several hundred Buffalo Soldiers were assigned to protect Yosemite, which was at that time a California State Park before it became the nation’s third national park. The duty of the Buffalo Soldiers at Yosemite was the same as it was in other national parks and future national parks across the American West – to protect these natural treasures from poachers, squatters, fires, loggers, and other threats, as well as to build infrastructure.