In the German Wehrmacht before and during World War II, infantry divisions were raised as part of a designated Aufstellungswelle (deployment wave) or Welle (wave), sometimes translated as "draft".[1] The Aufstellungswelle system was adopted by the Wehrmacht in late 1938. Peacetime units were the first wave, and 34 other waves followed until the 35th wave in April 1945. Several types of divisions were organized by Aufstellungswelle, including infantry, security, shadow and Volksgrenadier divisions.