In June 1933 the Blohm brothers appointed their brother-in-law and fellow B&V director Dipl-Ing Max Andreae and experienced aviator Robert Schröck to the board. Schröck recruited designer Reinhold Mewes away from Heinkel, and with four other designers, on 1 July they began work.[3] The Hamburger Flugzeugbau GmBH officially came into being on 4 July.[4]