A military habitat was a type of habitat that Xindi-Primates might live in. The scientist Degra once told Jonathan Archer that he and his family used to live at a military habitat before moving to Azati Prime. He explained that his wife, Naara, was desperate to leave because she didn't think a military habitat was the right environment for their children. (ENT: "Stratagem")
Degra later claimed that at this point he already doubted if he could trust Archer, so what he said should be taken with a grain of salt.