This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
inchMkVIHowitzerAndPlatform. Diagrams of inch Mk VI howitzer on firing platform and en train showing sequence of limber gun and platform US Army service Based on Diagram in Handbook of artillery including mobile antiaircraft and trench matriel page archive org United States Army Ordnance Dept US Government no copyright PDUSGov