"Battalion Wars 2 (突撃!!ファミコンウォーズ VS, Totsugeki!! Famicom Wars VS) is a video game for the Wii console. It is a sequel to the Nintendo GameCube title Battalion Wars. The game was officially announced August 23, 2006 at the Leipzig Games Convention with the official name, as well as the stylized abbreviation BWii. It was developed by Kuju Entertainment, which also developed the GameCube predecessor, and was published by Nintendo.
Battalion Wars 2 gameplay combines land, sea, and air combat. Unlike the first game, which did not feature naval combat, the sequel has several new sea-faring units."
Source: Wikipedia, "Battalion_Wars_2," available under the CC-BY-SA License.