The inclusion of a Bulgarian division was according to a pre-war arrangement between Serbian and Bulgarian armies, but that division ceased to obey the orders of Gen. Stepanović as soon as the war began, following only the orders of the Bulgarian High Command.
Bulgaaria diviisi kaasamine toimus vastavalt sõjaeelsele kokkulepele Serbia ja Bulgaaria armeede vahel, kuid see diviis loobus allumast kindral Stepanovići käskudele kohe, kui sõda algas, järgides ainult Bulgaaria Ülemjuhatuse käske.