Design more durable gun carriage: Gribovalle system

Design more durable gun carriage: Gribovalle system is an upgrade in Cossacks 3, available at the Academy.

Background
In 1750, French artillery general Jean Batiste Gribovalle (1715-1789) invented a horizontal foot screw that lightened cannon laying. In 1774, Gribovalle reorganized artillery. From then on, cannon calibres were standardized (field artillery comprised 12, 8 and 4 pound guns) in order to facilitate artillery ammunitions supplies and each gun component was manufactured in compliance with an exactly prescribed standard. Thus, in case of a gun carriage breakage, a defective part could be replaced quickly. Gribovalle's gun carriages were used in European armies for a long time and guns' durability was increased.

Effect

 * Artillery durability +50%