Kammala jumla mai zuwa: Constantine Diogenes shine farkon sanannen memba na dangin Diogenes masu daraja tare da asali daga Cappadocia, wanda ya taka muhimmiyar rawa a karni na 11 na Byzantium. Diogenes ya fara aikinsa a matsayin kwamandan daya daga cikin yammacin "tagmata" a lokacin mulkin Basil II (r. 976 <unk> 1025), a cikin na karshen
yaƙe-yaƙe a kan Bulgaria. A shekara ta 1014, ya shiga cikin nasarar da Byzantine ta yi a yakin Kleidion (Yuli 29), kuma daga baya ya yi nasara da Theophylact Botaneiates a matsayin kwamandan ("doux") na Thessalonica tare da matsayin "patrikios", wanda ya sa ya zama na biyu mafi girma na Janar na Daular a cikin Balkans bayan David Arianites. Bayan mutuwar Tsar Samuel na Bulgaria a watan Oktoba, an aika Diogenes da Nikephoros Xiphias zuwa yankin Moglena a matsayin jagorar sarki da babban rundunar. A lokacin wannan yaƙin, Diogenes ya gina sansanin Mylobos, kamar yadda aka nuna a rubutun wanda ya kafa sansanin.