In August he was at Smolensk and thought only of how to advance farther, though as we now see that advance was evidently ruinous to him.
He not merely did nothing of the kind, but on the contrary he used his power to select the most foolish and ruinous of all the courses open to him.
Despite all Kutuzov’s efforts to avoid that ruinous encounter and to preserve his troops, the massacre of the broken mob of French soldiers by worn-out Russians continued at Krasnoe for three days.
And it is even more difficult to understand just why they think that this maneuver was calculated to save Russia and destroy the French; for this flank march, had it been preceded, accompanied, or followed by other circumstances, might have proved ruinous to the Russians and salutary for the French.
There are no more uses of "ruinous" in the book.
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It was a ruinous war.
He gave notes, took up ruinous obligations, dealt with usurers and all the race of lenders.