Military history of Goguryeo
HISTORY OF GOGURYEO'S INVOLVEMENT IN WARS
Goguryeo wars; Goguryeo–Yan Wars; Fall of the Lelang and Daifang; Fall of the lelang and daifang; Military of Goguryeo; Military History of Goguryeo; Goguryeo-Yan War; Goguryeo–Yan War; Goguryeo-Yan Wars; Koguryo wars; Koguryo–Yan Wars; Goguryeo–Baekje War; Goguryeo–Silla War; Goguryeo-Baekje War; Goguryeo-Silla War; Koguryo-Yan Wars
The military history of Goguryeo involves wars with other Korean kingdoms, Chinese dynasties, nomadic states and tribes, and Wa Japan. Goguryeo was a highly militaristic state; it was a powerful empire and one of the great powers in East Asia, until it was defeated by a Silla–Tang alliance in 668 after prolonged exhaustion and internal strife caused by the death of Yeon Gaesomun.