The problem is you try and use your military service which you spent, in a ceremonial unit, to pretend you know anything at all about actual war fighting. That would be as silly as me trying to tell you how to march all pretty.
To be honest, I doubt his entire story.
Since he says he was an Infantry Officer (11A), and was in a Ceremonial unit in Washington DC, that has to mean the 3rd US Infantry Regiment (The Old Guard). Specifically the 1st battalion, 3rd Infantry Regiment.
Now I have to wonder how often that unit accepts "green" 2nd Lieutenants as part of their unit. At least in anything other than an administrative role, I am sure that for supply or admin it would not matter, but it would matter a lot for the ceremonial units (11X Infantry).
I know that in the Marines, such units
never get Green Lieutenants just out of schooling. They are always sent first to serve in fleet units for 4-6 years, and are generally on the waiting list to pick up Captain before they get posted to a Marine Barracks or other similar posting. At least, they never get Officers who are of the primary MOS of the unit itself. Yes, at Marine Barracks Mare Island we did have a 2nd Lieutenant who was the assistant S-4, but she was not Infantry and in an Infantry unit. We also had a brand new 2nd Lieutenant that arrived shortly before I left the unit. But he was a Mustang, and had been an Infantry Staff Sergeant before getting his commission so that really does not count.
I really have to question a brand new 2nd Lieutenant going to such a unit, and having to lead such ceremonies with almost no awards other than the Army Service Ribbon. This unit for the ceremonial units does not get "assigned" individuals, they have to either apply or get selected by one of their recruiting teams. They are selected from Soldiers in actual Infantry units, and the same is done with Officers.
In fact, in looking at the application for officers, it appears that the only way you can get in (as an Infantry Officer) is to apply while you are in an Infantry unit. It includes things like "Signature of the first O6 in your chain of command" and "Last three Officer Evaluation Reports", as well as letters of recommendation from your senior rater.
In my over 6 years in such postings, I never once saw a Boot Louie assigned to a position where they would be in command of Marines. Unless they are in a technical MOS they are always sent to a regular unit for "seasoning" before being assigned to such posts. Otherwise, if they stayed in and rotated to their next duty station as a senior 1st Lieutenant they would have no idea how to actually accomplish the duties they were supposed to be expert in.
I know it was hard enough going to the Fleet as a Corporal after over 3 years in such a posting. I can not imagine the military doing that to an Officer.
And when you are in such a posting, everybody should know that it is a special unit, and not the "regular military". In general such postings are thrown out as a "bone" to the Infantry who often spend years doing some of the hardest duties, as a way to have a work schedule that is closer to that of a "real job", and allow them to recover from the rigors of that job field. Before they were all closed down, the Marine Barracks were commonly seen at least once or twice by most who had done more than 10 years in the Corps (unless instead they went to other postings like Recruiting, Drill Field, Sea Duty, I&I Duty, or Embassy Duty). Do 4-6 years in a Fleet unit, then 2-4 years in a "B Billet", then back to the Fleet again.
It was very rare in the 1980's to see a Marine Infantry Staff Sergeant or above who had not done at least 1 of those duties in their career. In fact, in 1 case I knew a Gunnery Sergeant who had only spent 3 years in "The Fleet". He started at Marine Barracks Guam, then went to the Fleet. Then to Embassy Duty, Recruiting, and the Drill Field. He was in his sunset tour when I met him in 1996 as part of the Inspector Instructor staff at a Reserve unit in LA. I myself spent only 4 years in the Fleet, spending over 6 years in 2 different Marine Barracks.
So yea, I do not believe his story because it does not make sense.