I'm not sure who they are. They look to me like the Polish People's Army. Can somebody identify them, by the riffles, by the eagles and those badges on their collars? 

Soldiers

Hopefully, they won't fly too high or too fast. 

Machine gun position

Liberator Mk.V (GR.S,BZ890), belonging to the 1586th Squadron (301st Warsaw Defenders Division) on the airfield in Brandisi, Italy. The Division made 97 flights in August and September 1944, loaded with supplies for Warsaw Uprising. The men and officers in the picture are those ones who were strafing German ground targets after dropping their loads.