The low-neck.

A serious warning against attempting a fashion-shift back to the good-ol’ days of the high-neck uniform…

“I should like to talk about the care of your health and physical powers. There is no time for that; but remember that I want you to take care of your throats. Do not sacrifice your throats for too prim a military appearance. Remember the alternative of the low collar. When I see you singing solos, with high collars hooked tightly, i cannot tell you how badly I feel. The only really bad throat I have had during forty years of Officership was about six months after the high collar came in, when the doctor said I had a clergy man’s sore throat. I went back to the low collar, and have not known throat trouble since.”

- p. 38 Florence Booth The Powers of Salvation Army Officers (1914)