Long sleeve only, according to Army Regulations. These reproductions are cut slightly oversize to compensate for slight shrinkage. DO NOT order a larger size than normal.
HOW TO FIND YOUR SHIRT SIZE: Back in the Dark Ages, before the Internet, shirts came in dress shirt sizes, not S.M.L. The first number is your neck measurement in inches. The second number is the measurement from the center of your neck to your wrist, with your arm bent.