The inability to use their machine guns properly proved costly: after taking Urga in February 1921, Ungern had his Cossacks and Mongol cavalry hunt down the remnants of Xu's troops as they attempted to flee south on the road back to China.
Ketidakmampuan menggunakan senapan mesin mereka terbukti sangat mahal; Setelah mengambil Urga pada bulan Februari 1921, Ungern memerintahkan pasukan Cossack dan Mongolnya memburu sisa-sisa pasukan Xu ketika mereka berusaha melarikan diri ke selatan di jalan kembali ke Tiongkok.