Dubbed the Japanese Marines, the brigade is based in Sasebo, Nagasaki Prefecture, adjacent to Saga, and specializes in defending remote islands. The relocation of the Ospreys reflects Tokyo's recent focus on bolstering deterrence and response capabilities in the southwestern Nansei island chain, a strategically vital area due to its proximity to the potential geopolitical flashpoint of Taiwan. China considers Taiwan a renegade province to be reunified with the mainland, by force if necessary. It has stepped up military pressure on the self-ruled democratic island and increased maritime assertiveness in the East and South China seas.