as a synonym to the "field of Vrbas" ("campus Orbaz"), is from a letter of Slavonian magnate Ludovik Pekri, dated May 1537. Pekri reported to Ferdinand II, Archduke of Austria about the Ottomans who had left their horses grazing on "the field of Vrbas". In April 1538, Croatian-Slavonian Ban Petar Keglevich used the name in a Hungarian form transcribed into Latin - ager Lewachmezed (), valley of Levač field (долина Левач поље). In June of the same year, there was another record of Ottomans leaving their horses „in campo Lewach“. In the end of 1538, Ban Toma Nadazhdi proposed to one of the ban's with cavalry to "campum Levacz invader et omnia Illic Flamma et ferro miscere", while another part of the army would simultaneously attack with ships and infantry and again liberate Bosanska Gradiška from the Ottomans. Settlements The region spans over Gradiška in the northwest, Srbac in the northeast, and Laktaši at the southern point of the plain. Its seat is Gradiška. It includes the following settlements: Bardača Nova Topola Mahovljani Trošelje Kukulje Kočićevo Laminci Sređani Laktaši Mašići Donji Karajzovci Gornji Karajzovci Razboj Lijevački/Lijevče Rogolji Rovine History During World War II, the Battle of Lijevče Field was fought between Croatian Ustashe and Serb Chetnik forces in this region. Monuments Cathedral of the Transfiguration of the Lord, Serbian Orthodox Church in Razboj Lijevački, built in the second half of the 20th century. See also FK Lijevče, football club based in Nova Topola References Sources Landforms of Republika Srpska Gradiška, Bosnia and Herzegovina Regions of Republika Srpska