week ▁purs uit ▁course ▁en comp ass ed ▁theoretical ▁and ▁practical ▁ground ▁and ▁air ▁training . ▁Gr ound ▁instruction ▁included ▁study ▁of ▁the ▁organization ▁and ▁employ ment ▁of ▁purs uit ▁squad rons ; ▁the ▁types ▁and ▁assembly ▁of ▁mot ors , ▁air plan es , ▁and ▁rad ios ; ▁formation ▁flying ; ▁German ▁military ▁organization , ▁tact ics , ▁and ▁combat ▁aircraft ; ▁and ▁fighting ▁methods , ▁man eu vers , ▁attack , ▁and ▁combat , ▁while ▁alone ▁and ▁in ▁form ations . ▁▁ ▁Ob server ▁instruction ▁took ▁place ▁at ▁Call ▁Field , ▁Post ▁Field , ▁Lang ley ▁Field , ▁and ▁Self ridge ▁Field s . ▁ ▁The ▁observation ▁pilot ▁was ▁accompanied ▁by ▁an ▁aer ial ▁observer ▁who ▁gathered ▁information ▁and ▁photograph ed ▁enemy ▁positions . ▁ ▁Although ▁the ▁observation ▁mission ▁was ▁familiar , ▁for ▁the ▁first ▁time ▁the ▁Air ▁Service ▁had ▁to ▁craft ▁formal ▁crew ▁training ▁curr ic ula . ▁Besides ▁pil ots ▁transition ing ▁to ▁new ▁aircraft , ▁non - p il ot ▁obser vers ▁had ▁to ▁be ▁instruct ed ▁how ▁to ▁gauge ▁the ▁enemy ’ s ▁activities ▁and ▁to ▁photograph ▁and , ▁frequently , ▁to ▁shoot . ▁Thus , ▁in ▁addition ▁to ▁programs ▁for ▁pil oting ▁and ▁g unn ery ▁– ▁the ▁two ▁elements ▁of ▁purs uit ▁training ▁– ▁observation ▁required ▁teaching ▁the ▁additional ▁skills ▁of ▁radio ▁communication , ▁phot ography , ▁and ▁art illery ▁spot ting . ▁▁ ▁Bomb ing ▁instruction ▁took ▁place ▁at ▁Ell ington ▁Field ▁and ▁Ger st ner ▁Field s . ▁ ▁The ▁bomb ing ▁pilot