- For other uses, see Sidemore (disambiguation).
The Republic of Sidemore was an independent star nation in the Marsh System on the edge of the Silesian Confederacy.
The Sidemorians maintained a treaty relationship with the Star Kingdom of Manticore in recognition of Honor Harrington's contribution to their freedom (she freed them from Andre Warnecke's terror rule). They later began expanding their trade into Silesia. (HH6, HH10)
The Republic's armed space forces were called the Sidemore Navy. (HH10)
After Silesia was broken up and annexed by the Andermani and the Manticorans, Sidemore remained an independent star nation and ally of the Star Empire of Manticore. (infodump, "House of Steel")