This led to Serbia's army being mostly equipped with weapons exported from other countries, primarily from Russia and the United Kingdom.
Due to the occupation of Bosnia and Herzegovina by Austria-Hungary, relations between Serbia and Austria-Hungary rapidly deteriorated.
This is also why Serbia purchased weapons and equipment from Russia and the United Kingdom; they needed to assemble a certain number of troops to defend against Austria-Hungary.
Due to their shared Slavic heritage, Serbia eventually aligned with Russia.
This also resulted in most of Serbia's army using Russian weapons and equipment, with the Russians generously selling their army's rifles to the Serbians.
However, it was obvious that the rifles used by the Russian army were much more outdated compared to those used by Spain.
