15cm sIG33 gun (SS) (GE557) includes two 15cm sIG33 guns with crew, one Command SMG team, one Observer Rifle team, two Small bases & two Medium Bases. The 15cm schweres InfanterieGeschutz 33 (sIG33) was designed and built to fulfill the requirement for a powerful, close support gun for the infantry. The German Army preferred infantry support guns rather than the mortar that most other countries tended to favour for this kind of role.