So apparently the only way i can get the military base marked on my map is if i do a quest titled "talk to Goris" when i enter Vault 13, the first time i entered vault 13 i didnt talk to him, the second time i went there SPOILER ALERT all the deathclaws were dead and apparently the Enclave had killed them, when i talked to Goris he just said "i will avenge my brothers" or something along those lines and now hes following me, but he still didnt mark the base on my map and wont do so when i talk to him, please help. I really want to finish this game

You don't need to find the military base to finish the game.