According to Article VIII of the National By-Laws, the only official measure of a uniform is the overseas cap for elected and appointed officers of posts, districts, departments, and national. Members may purchase and wear the cap as well, but are not required to in accordance with (IAW) the by-laws.
Our post has adopted the following uniform as our official uniform for functions that call for the wear of the uniform; i.e. color guards, parades, and ceremonies. The uniform consists of 1) a white uniform shirt of military or police/fire design, with the membership-type (annual, life, legacy) patch worn on the left shoulder, the district patch or combat unit patch on the right shoulder, the POW/MIA patch on the left breast pocket, the American flag patch above the left breast pocket, and a name tag on the pocket flap of the right breast pocket (name tag can be either a black plate with white lettering of member's last name, or any of the VFW Store purchased types); 2) black trousers of either a police/fire or military style or slacks (no jeans); and 3) black shoes or boots. Appointed or elected officers, as well as other members who have earned special recognition (i.e. past commanders, quartermasters, All-American, etc.) may wear a small VFW produced pin on the left breast pocket flap designating their office or accomplishment.
For funerals and memorial services, members will decide, for that event, whether to wear the official uniform or a navy or black suit/sport coat with a white dress shirt, tie, either navy or black trousers, and black shoes along with the overseas hat.