I'm going to give this a provisional date of early 1920's. The illustrator makes this shirt's occupational role explicit by showing our model wearing his hat.
This shirt is a relative of Butterick 4078
. A few minor differences are observable. The pockets of this shirt are pleated, and if the illustration is accurate, the sleeve plackets are much longer. The back yoke is pointed. Note that this shirt is pull over only ("Closed front" as the catalogs call it.)
It's still a puzzle to me why an "Army Shirt" is something that (presumably civilian) men would want. However, as late as 1929, Montgomery Ward was still offering an "Army Style" shirt, yours for $1.98:
The price of the Pictorial pattern is 15 cents. In the 1929 Montgomery Ward catalog, I find that 36" wide, half-wool shirting flannel can be had for 39c a yard. The colors available were khaki tan, gray mixed, wine, dark green, dark brown, navy blue. It's interesting that khaki is the first color listed.
The Pictorial Review Army shirt in this size (36) will require three and quarter yards of fabric. I would buy a half yard extra because I'm pretty sure this fabric will shrink, and perhaps I'll buy a little extra for patching, so call it four yards. A spool of thread will run about 23 cents. Buttons will run about 20 cents for a dozen - that's good, it gives me some spares. Out of pocket cost:
Pattern - 15 cents
Fabric - 4 yards @ 39 cents/yard - $1.56
Thread - 23 cents
Buttons - 20 cents
Total = $2.14
Of course, if the man of the house is a little hard to fit, I'll be able lengthen the sleeves or make the neck a little larger.