The Battle of Kunlun Pass (simplified Chinese: 昆仑关战役; traditional Chinese: 崑崙關戰役; pinyin: Kūnlúnguān Zhànyì) was a series of struggles between the Japanese and the Chinese in contention for Kunlun Pass, a stragetically important position in Guangxi province, which the Imperial Japanese Army hoped to cut off aid through China from French-controlled Vietnam and resulted in a Chinese victory. In this battle, the National Revolutionary Army used the largest recorded number of tanks in the Second Sino-Japanese War.