Interesting to see this, thanks for posting it Ed.
Whatever its just an opinion.
I have also noted the difference in average sizes for uniforms during and before WWII.
I guess we have eaten better with better health care since that period.
There is no doubt that we are mostly bigger these days.
I wonder why the proportion figures go up-and-down instead of forming a smooth 'hump'?
Battle dress sizes don't go up in a simple size progression, there are a number of sizes for a given height with different waist and chest measurements. This is the full listing of sizes https://hatchfive.wordpress.com/2015...niform-sizing/
The vast majority of people had a 6 pack in those days and not through working out in the Gym.
During WW1 the average soldier would probably have been even smaller.