The article deals with peculiarities of military lexis, types of weapons and using of them in Kazakh eposes such as “Er Kokshe”, “Er Kosay”. It gives a detailed analysis of edgy weapons such as nayza, kylysh, sungi, zulpukar, semser and weapons for shooting – sadak, that exist in lyrics. Aims of comprehensive interpretation of Batyr’s character sketch are defined. It is analyzed some scientists works, who explored military lexis in Kazakh epos. In this scientific article etymology, lexis and morphological structures of types of weapons in eposes “Er Kokshe”, “Er kosay” are analyzed. It is specially noted to archaisms such as nayza, kylysh, sungi, zulpukar, semser which are exist in heroically eposes.