The attack on Pearl Harbor drew the United States into World War 2 at the beginning of the 1941-42 season. By season's end, all resources were being drawn in to the war effort. Almost all semi-pro basketball leagues went into hiatus in the summer of 1942, but the Connecticut State League chose to continue with only four clubs. The eastern seaboard and New England turned into a hotbed for military training and development, and there were enough athletes who joined the service who would find themselves stationed in Connecticut and New York. A lot of these players would play with independent teams from their base/station as well as being able to play in off-hours for local teams. Higher-tiered professional basketballers like Bob Calihan and Nick Shaback would play in the CSL while serving stateside, as well as some popular collegiate players from other regions of the country.
- Bridgeport Springwoods
- New Britain Lutherans
- New London Electric Boats
- West Haven Hull Red Devils