Complex sentence: According to the former Chetnik officer, Milan Deroc, the Chetnik Belgrade Command was established according to a secret list of soldiers generated by Royal Yugoslav Army Major, Boško Todorović.
Split into simpler sentences: According to the former Chetnik officer, Milan Deroc, the Chetnik Belgrade Command was established according to a secret list of soldiers. The list was compiled by the former Royal Yugoslav Army Major, Boško Todorović.