After the Napoleonic wars, Langeron was appointed the Military Governor of Kherson and Odessa, the commander-in-chief of the Bug and Black Sea Cossacks, and the Governor of Yekaterinoslav, Kherson, and Crimea.
In 1918 Russian stamps were overprinted with a trident for use in Kiev, Odessa, Yekaterinoslav, Kharkiv, Poltava, Podolia, and Kherson.