Marksmen Energy Inc., formerly Marksmen Resources Ltd., is a Canada-based oil and natural gas company. The Company focuses on exploring and developing light oil assets in Ohio. The Company is engaged in the acquisition, development, and production of crude oil from properties located in Ohio, the United States. It also focuses on other opportunities in Western Canada and the United States. The Company operates through the acquisition, exploration for, and development of petroleum and natural gas segment. In Alberta, the Company has properties located at Alder Flats, which consists of various oil and gas interests. Marksmen Energy USA, Inc. is the subsidiary of the Company, which holds properties and operates in the State of Ohio.