At the start of the Second World War , rugby league suspended its season immediately .
The Challenge Cup took a single year 's break before restarting , on a limited basis and with the support of the authorities , as part of keeping up morale .
At the start of the Second World War , rugby league suspended its season immediately , but the Challenge Cup took a single year 's break before restarting , on a limited basis and with the support of the authorities , as part of keeping up morale .