A modular actuation device for an object, such as an aerodynamic control surface of a missile. The modular actuation device can include an outer support structure configured to couple with an external support member, such as a structural portion of a missile. The modular actuation device can also include an electric motor to provide an input torque and having an outer casing coupled to the outer support structure. The modular actuation device can further include an epicyclic gear train disposed within the outer support structure and operably coupled to the electric motor to receive the input torque. The epicyclic gear train can be configured to provide an output torque to move the object. In addition, the modular actuation device can include a torque output member disposed at least partially within the outer support structure and coupled to the epicyclic gear train to receive the output torque. The torque output member can be configured to couple with the object.