▁there ▁are ▁regularly ▁scheduled ▁classes ▁in ▁Naval ▁Science ▁that ▁must ▁be ▁taken ▁on ▁top ▁of ▁the ▁usual ▁college ▁load . ▁The ▁classes ▁are ▁in ▁Naval ▁history , ▁Naval ▁engineering ▁and ▁weapons , ▁leadership ▁and ▁eth ics , ▁and ▁other ▁areas . ▁Besides ▁Naval ▁Science ▁classes , ▁the ▁Navy ▁requires ▁its ▁Mid ship men ▁to ▁complete ▁ 2 ▁sem esters ▁of ▁calculus , ▁ 2 ▁sem esters ▁of ▁calculus - based ▁physics , ▁one ▁sem ester ▁diverse ▁cult ures , ▁one ▁year ▁of ▁English ▁grammar ▁and ▁composition , ▁and ▁either ▁National ▁Security ▁Policy ▁or ▁American ▁Military ▁Affairs . ▁The ▁Marine ▁Corps ▁only ▁requires ▁National ▁Security ▁Policy / American ▁Military ▁Affairs ▁classes ▁for ▁its ▁mid ship men . ▁ ▁There ▁are ▁other ▁mis cell aneous ▁activities ▁scheduled ▁occasionally ; ▁some ▁are ▁volunt ary ▁and ▁some ▁are ▁mand atory . ▁ ▁Military ▁Colleg es ▁There ▁are ▁a ▁few ▁R OT C ▁programs ▁that ▁do ▁not ▁follow ▁this ▁model , ▁and ▁instead ▁require ▁a ▁full - time ▁commit ment ▁from ▁mid ship men ▁during ▁the ▁school ▁year . ▁At ▁a ▁Senior ▁Military ▁College , ▁the ▁mid ship men ▁are ▁normally ▁hous ed ▁together ▁with ▁other ▁R OT C ▁cad ets ▁in ▁bar ra cks - like ▁d orm itories , ▁a ▁uniform ▁is ▁worn ▁at ▁least ▁ 5 ▁days ▁a ▁week , ▁and ▁regular ▁morning ▁and ▁evening ▁form ations ▁are ▁mand atory . ▁ ▁At ▁The ▁Cit adel ▁and ▁the ▁Virginia ▁Military ▁Institute , ▁cad ets ▁wear ▁uniform s ▁ 7 ▁days ▁a ▁week , ▁live ▁in