Myrmidia

A goddess in Warhammer Fantasy worshiped by the men of Tilea and Estalia, as well as the Empire in a reduced capacity. She's an outright knockoff of Athena, being a goddess of strategy and the chain of command. Her followers are usually rivals of the main gods of the setting (Ulric and Sigmar respectively), who are mainly about going on human WAAAGH!s against Chaos worshipers and the Undead. She is the daughter of Morr, the human god of the dead, and Verena, the goddess of justice and scholars. According to 4th edition Warhammer Fantasy Roleplay, a language 'Battle Tongue' used by human soldiers in, well, battle was created by Myridia herself. She has a number of knightly orders, but the most prominent is the Order of the Blazing Sun, which produces classically heavily-armoured knights whose real claim to fame is being exemplars of her tenets that are some of the best tacticians/strategists around. Her sister is Shallya, goddess of mercy and healing. She has no 40k analogue.

The Gods of the Empire
Manann - Morr - Myrmidia - Ranald - Rhya - Shallya - Sigmar - Taal - Ulric - Verena