In December 1918, the flotilla was transferred under the command of the Caspian-Caucasian Front. In the early 1919, most of the Caspian Sea was under the control of the White Army and Allied intervention (21 armed steamships and 13 torpedo boats). In May 1919, the Astrakhan-Caspian Military Flotilla stormed ashore, captured a fort named Alexandrovsk, and then seized the "Leila" steamship, which carried General Anton Denikin's envoy General Alexei Grishin-Almazov (he was en route to Guryev to meet with Aleksandr Kolchak). In May–June 1919, the Astrakhan-Caspian Military Flotilla provided fire support to the units of the 10th and 11th Armies during the Tsaritsyn and Astrakhan defense. By this time, the flotilla had already had 3 cruisers (armed schooners), 6 destroyers, 3 torpedo boats, 4 submarines, 10 armed steamships, 7 fighters, 4 floating batteries etc.