Is it appropiate for a prior service member to correct service members on AR 670-1 violations?

Is it ever inappropriate to do so if done respectfully and politely? I would however be slow to report a lack of correction unless met with outright disrespect.

It's funny you mention that. I was up at my wife's college a few years ago and I saw some numb nuts with the canteen strapped to his dress greens...I definitely gave them an ass chewing

There's a lot of NG servicemembers in my area.

If the uniform error a bad one, like completely incorrect wear of the uniform, then yeah. I would have no problem offering a polite correction. If they give me 'tude because I'm a vet and not a serving soldier, I'm pretty sure I know someone who can tell me who their chain of command...

As a retired 1SG, ABSOLUTELY you can make an on the spot correction for a uniform mishap. I make them anytime I see one. If someone is disrespectful, I would try and report them if I felt need be. The only thing is will they give you the info to their leadership. I've never really been disrespected for a correction though. Just don't take it too far, let them know they are in the wrong and you would prefer they fix the issue. If they don't try and get the soldiers name rank and unit. Report their misconduct to leadership. What everyone has to know is that one Soldier whether near a military facility or the farthest, they are representing the past, present and future Soldiers of the Great UNITED STATES of AMERICA. If they look like a p.o.s, others will believe we all look like this. Represent us all as the greatest Soldiers in the world!

If you are fluent in the current regs, make the correction. Currently serving or not, those in the uniform represent the heritage of the service and need to wear it right.

Right but you're saying honorable served but you're a PSM PV2 which either means med boarded before your first year in the army was up or reduced in rank and booted out. Also AR 670-1 is ever changing, so unless somebody stays updated on regulations they can't really correct somebody. Finally as for reporting to a Brigade commander is ridiculous simply a squad leader or first sergeant would suffice, my Brigade is in a whole different state, so you could see the level of difficulty.

PSMs can be a life saver at times for this. For example I am in NG and getting ready to ship for 11b OSUT soon. We have our RSP each month and one morning me and a buddy were in a rush and stopped at a CVS to grab some water where a PSM came up to my buddy and just said "hey the back of your collar is jacked you need help to fix it real quick?" this then saved him from getting smoked upon getting to RSP. However there has been times where PSMs have been set on calling someone out for stolen valor because something is off and will not listen to anything you have to say. An example of this is after RSP we stopped to grab some food and a PSM came up and started grilling us on where our unit patches were and because we are in RSP and havent gone to training yet we dont get patched and sent to our units until after. We tried to politely explain this to him as it could be confusing but he wasnt having it and started yelling at us and we werent exactly sure what to do but luckily a SM came up a settled it.

So my point is it is nice to have PSMs come up and make corrections because it can be a life saver. but on the other hand dont approach assuming since the uniform isnt perfect.

If you know the standards then go for it however uniforms change and the standards become different. When I am 90 years only and I see a Soldier wearing his or her mech suit all jacked up I may say something if I have read the reg over said mech suit

It's always proper to correct. Correct those seniors with the respect befitting their rank.

I think it's fine to make a correction. There is no need to be a dick about it, because that could just lead to a bad situation since the civilian has no authority anymore. As a civilian it's important to make sure that the correction that you are making is correct since there are always changes to the regulations and it's not like most civilians are still researching Army Regs.