Translation of "treachery" into Latin

Before me, three legions, three commanders have fallen. Not by treachery, not against pregnant women, but openly against armed men do I wage war.

sibi tres legiones, totidem legatos procubuisse; non enim se proditione neque adversus feminas gravidas, sed palam adversus armatos bellum tractare.

The vanquished troops, following what had become a regular practice, laid the blame not on their own cowardice, but on supposed treachery in the legate.

victi, quod tum in morem verterat, non suam ignaviam, sed perfidiam legati culpabant.

Then Meherdates in despair yielded to promises from Parrhaces, one of his father's adherents, and was by his treachery delivered in chains to the conqueror.

tum omni spe perdita Meherdates, promissa Parracis paterni clientis secutus, dolo eius vincitur traditurque victori.