In late 1920 a cease fire agreement had been signed and in February 1921 Skierski had his grade confirmed. Following the demobilisation he remained in active service and became the inspector of the 3rd Army Inspectorate in Toruń. Although not a supporter of Józef Piłsudski, he was seen by the Marshal of Poland as one of the most skilled Polish officers. Following Piłsudski's May Coup d'État in 1927 Skierski was attached to the Warsaw-based General Inspectorate of the Armed Forces, where he became one of the closest collaborators of Piłsudski. On December 31, 1931 he was promoted to the rank of "generał dywizji" and retired from active service.