The best set of photos I've seen depicting Serbian infantry are from the Guns of August articles in http://gunsmagazine.com/guns-of-august-1914-360-degree-uniform-views/. This is an excerpt of the text in the article on Serb infantry. "The tough, veteran soldiers of the Serbian 1st Ban Infantry had recently overthrown the Ottoman Turkish yoke and this time it was to be the Hapsburg’s who sought to impose their will on the Serbs. The “Šubara,” the traditional Serbian cap was adopted in its present form along with the introduction of the M1908 uniform. The gray M1908 tunic features the distinct Austrian style pointed pocket flaps in vogue militarily at the turn of the century. Boots and puttees were issued when available as is the case here. Personal effects and issue items are carried in a blanket roll including a shelter-half and woolen blanket, while rations and extra ammunition was carried in the bread-bag. A private purchase water bottle could carry water, wine or spirits, or a combination thereof. A Linnemann pattern entrenching spade is strapped to the back of the blanket roll and the bread-bag and water bottle hide all by the lower tip of the bayonet scabbard. Cartridge boxes and a dagger are worn on the leather equipment belt." In 1914, actually the 1st Ban was the only one of three that was fully equipped. The 2nd Ban was issued parts of the M1908 uniform, but minimal field equipment and generally no weapons. The 3rd Ban went to war in civilian clothing, no field equipment and no weapons. Note the last photo of two infantrymen headed to the front with full uniforms but armed only with knives.