During the Great War, 342 000 square kilometres, that is, nearly 90 percent of the territory of Poland (within the borders before 1939) were the areas of direct military activities. Out of the 16 provinces, damages and losses directly caused by the war were recorded in 13 of them. The total number of buildings destroyed or significantly damaged during the war (following the data referring to the area of the former Kingdom of Poland only) was over 1 884 000. The direct causes included artillery and gun fire, dismantling for the purposes of trenches and other military purposes, fuel, as well as accidental or intentional fires. In 1915, the withdrawal of the Russian army involved deliberate destruction and burning of buildings. As specified in the statistical data, the largest losses as regards buildings in the territory of the present-day Lublin Province (taking into account the losses in the territory of the former Kingdom of Poland) were recorded in the district of Chełm – 41.9% (the largest of all districts). In other districts, the percentage of destroyed buildings was as follows: in the district of Hrubieszów 29.5%, Tomaszów 21.2%, Lubartów 21.1%, Lublin 17.6%, Krasnystaw 17.4%, Puławy 16%, Biłgoraj 14.7%, Zamość 12.8%, Janów 8.8% and Łuków 8.2%. Within those districts, many towns with historical buildings and historical churches, Orthodox churches, synagogues and public utility buildings were destroyed. One of the most valuable towns destroyed during the War was Kazimierz nad Wisłą, in which a number of historical, 17th-century tenements were burned. The article describes the destructions in three towns of the Lublin Land: Krasnystaw, Końskowola and Ostrów Lubelski. Krasnystaw during World War I was conquered three times. It was a strategic town, among others, for the reason of the nearby Russian railway Lublin – Chełm – Kowel. Within the historical town (that is, excluding the suburbs), 180 buildings were destroyed, including 68 residential ones. The Baroque, former Jesuit church of Francis Xavier, built in the years 1695- 1717 following the design of the architect Jan Delamars, was damaged. The brick synagogue and the seat of town authorities were burned. In 1915, the Russian army withdrawing from the territory of the Kingdom of Poland fought fierce battles on the section Końskowola – Kurów – Markuszów – Garbów – Jastków. They resulted in, among others, the destruction of Końskowola, in which 326 buildings out of the 333 recorded ones were burned. Roman Catholic churches have survived, but other parish buildings and the historical bell tower from 1778 were destroyed. The synagogue built before 1882 was burned and, for that reason, it was closed until 1921. The wooden residential and utility buildings in Ostrów Lubelski were destroyed nearly in 2/3 in August 1915, as the fire caused by artillery fire of German forces, attacking the withdrawing Russian army, destroyed 512 residential buildings (out of 822 recorded in 1914). The brick, Baroque Roman Catholic church, built following a design of the architect Paweł Fontana and a brick Orthodox church built in the years 1888-1890 following a design of the architect Wiktor Syczugow, were damaged by bullets. The history of wartime destructions and the losses borne during World War I concerning single historical monuments, groups of monuments and in the areas of historical urban complexes has not been examined and described exhaustingly, and many archival sources have not been studied yet.