The Bastion-class escort carriers are a large class of aircraft carrier designed and built by the island nation of Eswen. First designed in 34 B.E. as a way of providing convoys and amphibious landings with valuable air cover, the first ship, Bastion, entered service in 32 B.E. and served with distinction in several campaigns. Despite initially only being a single ship class, the Esweni Navy was impressed with Bastion's growing list of victories and soon ordered many more. Because of their ease of construction and the number of keels being laid down simultaneously, their numbers grew fast and, by the time of the COG invasion of Eswen in 27 B.E., one hundred and fifteen carriers had been built. When Eswen surrendered and was officially annexed into the Coalition later that year, thirty nine