Sierawski was a supporter of the
November uprising as he was made Military Governor of Warsaw from 30 November to 4 December 1830. On 14 December 1830, he was appointed commandant of the
Zamość Fortress. In March 1831, Sierawski twice received a letter from the inept Commander-in-Chief of the uprising,
Jan Skrzynecki, urging him to be more active and ‘disturb’ Russian General
Cyprian Belzig von Kreutz. Skrzynecki thus wanted to shrug off his responsibility for the impasse at the front and hide his lack of ideas for further military steps. Sierawski felt these letters as undeserved criticism and, affected, allowed himself to be ambitious. He advanced eastwards with his corps composed of freshly formed units. He crossed the
Vistula river successfully on 14 April and that was the end of his successes. After Kreutz had concentrated his army both their armies faced off at the battle of Wronowo on 17 April, which he lost but inflicted heavy losses on Kreutz army and retreated with his army in good condition. The defeat of his armies at Kazimierz Dolny on 18 April put an end to his offensive and may have determined his defeat on the south-eastern front. From 5 June to 18 September 1831, he was commander of the 5th Infantry Division during the November Uprising. == Personal life ==