This is the standard issue enlisted man's shirt of the later campaigns of WWII.  Eventually this style of shirt replaced the earlier style 2-pc collar and placket M1937 style shirt.   This shirt does NOT include a gas flap.  Historically, the Army changed to the convertible collar style in approximately 1943.

Our khaki cotton shirts are robust yet comfortable!  Buttons are durable solid cast melamine and all seams are stitched with pride using 100% cotton thread.  We also include a beautifully replicated QM inspector tag.

Also, this shirt was nearly identical to the US Navy Officer's style duty shirt.