In 1941 this group was 'called up'?

In 1941, the United States began drafting soldiers into military service as part of its efforts to prepare for involvement in World War II. This call-up primarily affected young men who were required to register for the Selective Service. The draft was a critical measure to bolster the armed forces as the U.S. mobilized to support Allied nations against Axis powers. The call-up reflected the increasing urgency and scale of the war effort.