Complex sentence: After the end of the War, the Colonial Marines were first stationed at the Royal Naval Dockyard, Bermuda, and on rejecting government orders to be transferred to the West India Regiments, agreed to be settled in Trinidad.
Split into simpler sentences: After the end of the War, the Colonial Marines were first stationed at the Royal Naval Dockyard, Bermuda. After they rejected government orders to be transferred to the West India Regiments, they agreed to be settled in Trinidad.