During war-time, in an effort to survive financially, Sochaux formed an interim merger with local rivals AS Valentigney. The club, known as "FC Sochaux-Valentigney", participated in the war-time championships from 1942–1944. Following the conclusion of the war, Sochaux dissolved the merger, turn professional again, and returned to its original name. The club, however, failed to get back to its form prior to the war and, subsequently, made the decision to forgo entering bidding wars for players, which was becoming the norm and, instead, focus on keeping the team's budget even. As a result, in the first season after the war, Sochaux suffered relegation after finishing in last place with only 15 points. Sochaux spent only one season in the second division and returned to Division 1 for the 1947–48 season. The club spent the next 13 seasons playing in Division 1 with its best finish coming during the 1952–53 season when the club finished runner-up to champions Stade Reims. In the same season, Sochaux won its first honour since 1938 after winning the Coupe Charles Drago. In 1959, the club returned to the Coupe de France final, however, the outcome was not in Sochaux's favour, with the club losing 3-0 to Le Havre in a replay after a 2–2 draw.