The Ukrainian People's Army (Ukrainian: Армія Української Народної Республіки), also known as the Ukrainian National Army (UNA) were often quickly reorganized units of the former Russian Imperial Army or newly formed volunteer detachments that later joined the national armed forces. The army for a long period lacked a certain degree of uniformity, adequate leadership to keep discipline and morale. Unlike the Ukrainian Galician Army, the Ukrainian People's Army did not manage to evolve a solid organizational structure, and consisted mostly of volunteer units, not regulars.