- Crossmen: founded
- Bethesda Emerald Knights: founded
- Geneva Appleknockers (junior) cease operations at end of this season.
- The Purple Lancers of Auburn, New York become the first junior corps from New York State to place in DCI's Open Class finals, only to cease operations at the end of the season.
- Philadelphia Police Cadets (PAL) won the 1974 Junior Corps American Legion National Championship title in Miami, Florida.