text: what is the best field in the military to do if i want to be in the cia or secret service later? as an officer take advantage of dlab schools. always good to be fluent in a 2nd language. military intelligence would be best bet, but you should also have a college degree as well. contact the cia or visit their web site. few people realize it, but they have college programs/scholarships similar to the military, but they are selective.