Our series on the leading maritime militias of Hainan Province continues with this second installment in a two-part in-depth examination of the maritime militia of Tanmen Township. Since its founding in 1985, this force has transformed from an entrepreneurial fishing collective on China’s marine frontier to a reliable frontline unit in increasingly vigorous sovereignty promotion. In part one we discussed the role Tanmen’s maritime militia played in the 2012 Scarborough Shoal Incident that resulted in a Chinese takeover of the feature from the Philippines. After the Communist Party of China (CPC) officially declared the new national goal of becoming a maritime power at the 18th National Congress, newly appointed Chinese President Xi Jinping marked the Tanmen Militia unit as the model for emulation in maritime militia building. A subsequent deluge of delegation visits further reinforced the significance of this unit. Part two will focus on other major events involving the Tanmen Maritime Militia, particularly its participation in the 1995 Mischief Reef Incident and China’s sea-based defense of the HYSY-981 oil rig off the southern Paracel islands in 2014 (which also involved the Sanya militia, as the first article in this series discussed) and China’s multi-decade augmentation of its Spratlys outposts. This article will also probe the Tanmen militia’s organization and leadership, the challenges and opportunities associated with its management and motivation, and will raise the possibility that the Tanmen militiamen’s mission at Scarborough Shoal may not yet be finished.