Responses
I don't know about real manga but the artists for the first two are
1st Kano Shioku
2nd Inariya Fusanosuke (check out Maiden Rose - the military theme fits but I am not sure about that specific couple…)
1) Looks like http://www.mangago.me/read-manga/bomb_heaven/
Are any of these real manga?? If so, tell me which please!!
http://www.mangago.me/read-manga/umi_no_juunin_to_wa_koi_wa_shinai/mf/v01/c003/2/
http://www.mangago.me/read-manga/umi_no_juunin_to_wa_koi_wa_shinai/mf/v01/c002/2/
http://www.mangago.me/read-manga/black_sheep_down/bt/236552/Vol1_Ch1/2/