There's a mix of characters drawn from life and made up people to try different levels of stylisation here. Large portrait top right is Lydia Litvyak, famous female Soviet fighter ace (18 kills).
The other realistic portraits are soldiers who captured and held Pavlov's house with him. And there's a couple comic-styled guys there, and a PPSh-41 for good measure.
Looking promising.
You think all the ladies should have them too?
Somewhere, I didn't get round to scanning it last night. Will do today.