11-inch mortar M1877

The 11-inch mortar M1877 was a Russian 280 mm (11 in) coastal and fortress mortar that was used in the Russo-Japanese War and World War I.

11-inch mortar M1877

The 11-inch mortar M1877 was a Russian 280 mm (11 in) coastal and fortress mortar that was used in the Russo-Japanese War and World War I.