The Korean War broke out in 1950, which also impacted the relationship between China and the US. To prevent the expansion of Communism, the US began providing aid to the government of the Republic of China (Taiwan) in the form of loans and established the US Military Assistance and Advisory Group in Taiwan to oversee the implementation of American aid policies. During that time, the equipment used and the training received by the Air Force were provided by the US. Therefore, this advisory group was stationed inside the Air Force Command Headquarters. As such, the US military built the Communications Office and the US-Aid Building (now Art Space V), with drastically different architectural styles from those of the Japanese colonial era. As with the US military dormitories on Yangmingshan, both buildings were constructed of hollow bricks, while the former was built of white walls, red tile roofs and chimneys, and the latter expressed a strong modernist style with its convex and concave interweaving structures.