The remarkable western section of the south gallery depicts a triumphal battle march of Suryavarman II’s army. In the southwestern corner about 2m from the floor is Suryavarman II on an elephant, wearing the royal tiara and armed with a battleaxe; he is shaded by 15 parasols and fanned by legions of servants.
Compare this image of the king with the image of Rama in the northern gallery and you’ll notice an uncanny likeness that helped reinforce the aura of the god-king.
Further on is a procession of well-armed soldiers and officers on horseback; among them are bold and warlike chiefs on elephants. Just before the end of this panel is the rather disorderly Siamese mercenary army, with their long headdresses and ragged marching, at that time allied with the Khmers in their conflict with the Chams. The Khmer troops have square breastplates and are armed with spears; the Thais wear skirts and carry tridents.
The rectangular holes seen in the Army of Suryavarman II relief were created when, so the story goes, Thai soldiers removed pieces of the scene containing inscriptions that reportedly gave clues to the location of the golden treasures of Suryavarman II, later buried during the reign of Jayavarman VII.