Mar 13 1918 “Men of an anti-aircraft bat…

Mar 13 1918 “Men of an anti-aircraft battery using telescopes to verify identification range finders and range table, for the guns at St. Vaast” https://t.co/n4lJD6TGIy https://t.co/ASxEio1BhB http://twitter.com/ThisDayInWWI/status/973549965094961159