system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] At the end of Two Towers, where did the 950 or so extra horsemen that showed up with Eomer come from? In the first act, he only had about 50 guys with him.
gpt
Although they have towns, the general population of the Rohirrim is pretty dispersed. They live in small settlements - hamlets and farmsteads. Theoden had gathered everyone within range of Edoras (the capital), but there were countless more too far away to hear his call in time to join the retreat to the Hornburg.

Meanwhile, Eomer had been riding to the north of Rohan, gathering men he could count on from all those little villages. His initial intention was probably to attempt to overthrow Grima Wormtongue by whatever means necessary, but since Gandalf had already kicked that ass for him he found himself perfectly equipped for a rescue mission.