Flag was three horizontal bars of red over blue over white. Cockade was outside-in: white-blue-red.

M1912 Infantry Uniform. Though text indicates a khaki color, much of the artwork shows a olive drab tint. Some units still wore the old black harness. Forage cap was of a unique brimless shape with a large portion of the crown showing. Khaki-Olive Drab = Tunic, Pants, leggings and forage cap; Dark Brown = wool blanket roll; Brown = hide shoes, legging straps and harness; Collar patch was in facing color; Infantry = Madder red, engineers = cherry red, artillery = black, Cavalry = Dark Blue. In the winter fur caps were often worn.

M1890 Infantry Uniform: Dark Blue = Coat; Gray-Blue or sometimes Black = Pants; Dark Brown = wool blanket roll; Black = harness; Infantry wore Dark Blue Forage cap with a madder red band and officers and senior NCOs had a green band. Artillerymen wore black caps and engineers wore red caps. In the winter fur caps were often worn.

Reserve and Levy Troops: Brown = Coat and pants. Caps were forage caps in a branch color. Infantry = Gray-blue, Cavalry = Dark Blue, Artillery = Black.

M1890 Cavalry Uniform: Light Blue = Tunic and Cap; Black = Boots and Harness; Bright Red = Pants; Dark Blue = Collar patch and epaulets

M1890 Guard Cavalry Uniform: Dark Green = Tunic; Light Blue Pelise w/ Black fur trim; Madder Red Pants w/ yellow side stripe; Black Busby w/ yellow top-bag or Dark Green Forage cap w/ yellow band; Black = Boots and Harness. I am not sure if they wore the M1912 uniform during the Balkans War. M1912 Cavalry Uniform used the Infantry Uniform but with Dark Blue cap or cap bands.

Overview of Uniforms Worn During the Balkan Wars

Introduction
Roumania
Ottoman Turkey
Montenegro
Serbia
Bulgaria
Greece