This photo was likely taken on 16 September 1916 when Oswald Boelcke and some of his pilots from Jasta 2 went to Armee-Flug-Park 1 to collect their new Albatros fighters. Boelcke stands at center with a walking stick and facing him (with clasped hands) is Alfred Keller, the CO of AFP1, Richthofen is behind, and partially obscured by, Keller.