Notes: This Belgian-made howitzer had sales only to Thailand (Marines). The GC-45 of its designation stands for Gun Caliber 45, meaning the length of the barrel. The GC-45 is of standard construction for a howitzer, with a split trail and 4-wheeled carriage. The breech opens automatically after a shot and closes automatically when loaded. The carriage is very robust and stable, enabling it to be towed at very high speeds. The trails have rubber tires to ease emplacement.

Twilight 2000 Notes: A Swiss company also purchased the manufacturing rights to the weapon before the war, and during the Twilight War manufactured the weapon for Switzerland.  It was also pressed into use by the Belgians themselves during the Twilight War.