Contains a 13-volume unit history of the U.S. Army's 158th Field Artillery Battalion, which is an Oklahoma National Guard unit that was brought into federal service several times, including during World War II, the Korean War, Persian Gulf War, and the War on Terrorism.

Cover title. Volume 8 lacks pagination. "The last four volumes in this series are "official journals" which are composed of registries of data that are derived from newspapers, periodicals, journals, orders, rosters, and official correspondence."--Preface of volumes 9-12. The end of volume 12 includes an erratum for the series. "This volume complements the twelve volume series of the first one hundred years of service of the 158th Field Artillery which can be found at the Morris Swett Library, Fort Sill, Oklahoma; or the U. S. Library of Congress Control Number 2018957292."--Preface of volume 13.

Vol. 1The centennial review -- Vol. 2 Battle campaigns and honors -- Vol. 3 World War II -- Vol. 4 Korean War -- Vol. 5 Persian Gulf War -- Vol. 6 Global war on terrorism -- Vol. 7 The Cold War -- Vol. 8 Unit photos & official rosters -- Vol. 9 Official journal 1920-1945 -- Vol. 10 Official journal 1946-1970 -- Vol. 11 Official journal 1971-1995 -- Vol. 12 Official journal 1996-2020 -- Vol. 13 Casualties of war.