These files are often digitized and available through the 7th Armored Division Association and other historical repositories [26].
Based on historical video archives, the identifier (which matches your number "2294") refers to a US Army Signal Corps moving picture file from World War II [26].
This specific reel (ADC 2294) contains footage of General Walton Walker (XX Corps) awarding medals in Verdun, France, dated September 4, 1944 [26].