Original U.S. WWI 25th Aero Squadron Grouping For Aerial Photographer Sergeant Don L. Palmer Featuring Passes and Membership Cards For Hollywood / ABC Film Productions - Formerly Displayed In The Oklahoma Aviation Museum British Swagger Stick indicating production under contract to

indicating production under contract to Auto-Ordnance

The battalion remained in Eilenberg for several days before continuing to advance

after taking part in the capture of Martinique

The serial number is 3162 denoting the year of manufacture as 1875

[Note: The HT-1E schematic is missing a connection that is required for the transmit oscillator

Original U.S. WWI 25th Aero Squadron Grouping For Aerial Photographer Sergeant Don L. Palmer Featuring Passes and Membership Cards For Hollywood / ABC Film Productions - Formerly Displayed In The Oklahoma Aviation Museum British Swagger Stick indicating production under contract toOriginal Items: Only One Grouping Available. Aerial imagery was first used comprehensively to plan an engagement in the early months of 1915. At the Battle of Neuve Chapelle, British intelligence distributed 1,500 photographic maps of the German trench fortifications to British infantry commanders and, for the first time, aerial observers coordinated artillery barrages with an infantry advance. Despite being a strategic failure for the Allies, the