The title (lower left) is "Gakuto Shutsujin" (The Students' Departure for the Front). The artist is Mitsuru Suzuki (lower right). The picture represents the mobilization of Japanese students in 1943 to compensate for a shortage of soldiers. Here's the Japanese Wikipedia article on the subject:
The title of the first card is "Hokyu" (Releasing the Pigeons), and the artist is Kofu ISHII (ISHII is the family name). The signature only says "Kofu" but I found the full name by doing a Google search. Both "Hokyu" and "Kofu" have long o's and long u's, but this forum doesn't support letters with macrons (long marks).
The title of the second card is "Kita no Seiei" (Northern Elite), and the artist is Teiji TAKAI.
I can't read all the characters on the third card. Can you provide a larger (and perhaps clearer) scan of those?