Alexander Nikolayevich Tukhachevsky (; 1793 â 1831) was a Russian military officer and a colonel of the Imperial Russian Army. A commanding officer of the (14th) Olonets Infantry Regiment, he took part in the Polish-Russian War of 1830 and was killed in the battle of Warsaw (1831). Coincidentally, his great-grandson Mikhail Tukhachevsky was defeated at the gates of Warsaw almost a century later.