Yes, if you remain patient and conscious of Allāh and they [i.e., the enemy] come upon you [attacking] in rage, your Lord will reinforce you with five thousand angels having marks [of distinction]."
Indeed, that is enough, and there is good news for you of more aid from Allah if you are courageous in fighting and are Mindful: if the reinforcements of your enemies come rushing at you, then your Lord will help you with five thousand angels, with clear marks on them and their horses.