兵敗如山倒

troops in defeat like a landslide (idiom); a beaten army in total collapse

soldiers / a force / an army / weapons / arms / military / warlike / CL:個|个[ge4]

to defeat / to damage / to lose (to an opponent) / to fail / to wither

as / as if / such as

mountain / hill / anything that resembles a mountain / CL:座[zuo4] / bundled straw in which silkworms spin cocoons / gable

to fall; to collapse; to lie horizontally / to fail; to go bankrupt / to overthrow / to change (trains or buses) / to move around / to resell at a profit

to invert; to place upside down or frontside back / to pour out / to tip out; to dump / inverted; upside down; reversed / to go backward / contrary to what one might expect; but; yet