This is a great movie - not just CGI, but a good story too.
The connection with militaria?
Wonder Woman's disguise while in WWI London: she is on the left and the two images on the right are US Army Nurse Agnes Reid who was chief nurse at an Army hospital in France in 1917-1918.
This type of women's "overseas" uniform was worn by women in several different roles, military and non-military, uncluding the Red Cross.
Here's a photo from another forum thread: