This tag is applied to all "萌え萌え2次大戦(略)"("Moe Moe niji Taisen (Ryaku)", "Moe Moe World War II ryaku" ) series, developed by SystemSoft Alpha Corp.
This series is a parody of Daisenryaku series, a long-running series of strategy games by SystemSoft Alpha themselves.
All heroines of these games are mecha musumes called Hagane no Otome (Iron Maidens).