Used advantage of terrain, hit and run, ambush Vietnamese military did not stop the Mongols from the beginning of the war, but let Mongol army moving deep into Đại Việt territory. They make use of the understanding of their territory, the advantages of terrain. Build secret bases to hide and ambush points when they fighting. Take this advantage, Vietnamese attack and defense very flexible. Not only did the Mongols used hit and run tactic, Vietnamese were even more proficient this tactic as an art. When they could not win, they retreat quickly. In third time Mongol invade Đại Việt, they used 70 transport ships, movement 170.000 koku food. Vietnamese guess that's thing at soon time, that Mongol will find way to war without logistics problem of them. Vietnamese army and navy waiting Mongol come, and a navy battle was happened, almost transport ships sunk, fastly Mongol ready a plan to run away out of Đại Việt. They knows they can not fights without food. Disperse and converging Trần dynasty's army disperse their force units in beginning war and when they meet a large force of Mongol. When meeting advantages time, they converging their armys for battles. This tactic similar basic tactic of Mongol. But, when Mongol converging their force, Vietnamese never attack, in Vietnam military phrase that calls "Bảo toàn lực lượng" and "Án binh bất động". When, they saw Mongol disperse force, they will be attack, defeat in detail Mongol force.%DIFDELCMD < %DIFDELCMD < %%% Psychological warfare Launched a psychological warfare aimed to Chinese troops in the Mongol army. Because, just only a part of expeditionaries are Mongolian, almost them are Chinese, Vietnamese calling them to leave the Mongol army. With a slave army, Mongol not strengths.%DIFDELCMD < %DIFDELCMD < %%% Trầns'force make night combat tactic. They make enemy troops did tired, which longdays war it's make Mongol force to depressed. Iron-headed poles tactic%DIFDELCMD < %DIFDELCMD < %%% Article: Battle of Bạch Đằng (1288)
Advantage of terrain, hit and run, and ambushes Vietnamese military did not stop the Mongols from the beginning of the war, but let Mongol army moving deep into Đại Việt territory. They make use of the understanding of their territory, the advantages of terrain. Build secret bases to hide and ambush points when they fighting. Take this advantage, Vietnamese attack and defense very flexible. Not only did the Mongols used hit and run tactic, Vietnamese were even more proficient this tactic as an art. When they could not win, they retreat quickly. In third time Mongol invade Đại Việt, they used 70 transport ships, movement 170.000 koku food. Vietnamese guess that's thing at soon time, that Mongol will find way to war without logistics problem of them. Vietnamese army and navy waiting Mongol come, and a navy battle was happened, almost transport ships sunk, fastly Mongol ready a plan to run away out of Đại Việt. They knows they can not fights without food. %DIFDELCMD < %DIFDELCMD < %%% %DIFDELCMD < %DIFDELCMD < %%% %DIFDELCMD < %DIFDELCMD < %%% 
R
Used advantage
Advantage
R
ambush
and ambushes
D
Disperse and converging
D
Trần dynasty's army disperse their force units in beginning war and when they meet a large force of Mongol. When meeting advantages time, they converging their armys for battles. This tactic similar basic tactic of Mongol. But, when Mongol converging their force, Vietnamese never attack, in Vietnam military phrase that calls "Bảo toàn lực lượng" and "Án binh bất động". When, they saw Mongol disperse force, they will be attack, defeat in detail Mongol force.
D
Psychological warfare
D
Launched a psychological warfare aimed to Chinese troops in the Mongol army. Because, just only a part of expeditionaries are Mongolian, almost them are Chinese, Vietnamese calling them to leave the Mongol army. With a slave army, Mongol not strengths.
D
Trầns'force make night combat tactic. They make enemy troops did tired, which longdays war it's make Mongol force to depressed.
D
Iron-headed poles tactic
D
Article: Battle of Bạch Đằng (1288)