In formal writing or when directly addressing someone, Marine title Gunny (short for Gunnery Sergeant) is capitalized. In general text or casual conversation, it is typically not capitalized.
A platoon sergeant is someone who is responsible for the care and well-being of a platoon of soldiers. It is a description of a job. A Sergeant First Class is a pay grade (rank). It is also called E-7, and abbreviated SFC. Usually (but not always) the job of platoon sergeant is given to a soldier in the pay grade of Sergeant First Class, due to their experience and skill. It is possible to have a well-performing soldier of the previous rank (Staff Sergeant) doing the job of platoon sergeant, and it is also possible that a Sergeant First Class could be doing something other than leading a platoon (staff duty, for example).
Yes. 100%. However, in practicality, as a Marine I can tell you that it isn't that cut and dry lol. In official capacities, any officer is superior to any enlisted personnel. But you have to understand the rank of Sergeant Major. It is an E-9, the highest possible rank, same as another rank, Master Gunnery Sergeant. Here's the difference, after Master Sergeant (E8), you get the choice to either continue as a master of your profession (Master Gunnery Sergeant) or, the more political route as a leader of troops and advisor to the commander of the battalion (Sergeant Major). Thus, the Sergeant Major of the Marine Corps is the highest enlisted rank, above that of a regular Sergeant Major, and his job is to make sure the enlisted below him carry out the orders of the Commandant. His job is to execute policy changes, travel to bases and speak to the troops, etc. But remember I said there's a difference? What I mean is this... a Marine officer leaves school and arrives at their unit as a second Lieutenant (butterbar, lol) and automatically picks up first Lieutenant six months later (silver bar). Bottom line, Lieutenant -- less than two years if they have a silver bar. Sergeant Major -- 20+ years (you can retire after 20 so now they're doing it for the love). A Lieutenant trying to "pull rank" on a Sergeant Major in a disrespectful way wouldn't be advised. Case in point, I've seen a Master Gunnery Sergeant walk past a 2nd Lt. without saluting (probably didn't see him or was doing something). Now, according to rules and traditions, he's required to salute. So, the Lieutenant, in a rude and demeaning way, asked the Master Gunnery Sergeant why he didn't salute him and the Masters Guns without hesitation told him to "climb the rockers on my collar before you speak to me *expletive*". Ouch. He's not technically allowed to do that, but what do you expect when you've been in less than six months and get smart with someone who can retire today. Bottom line, the Sergeant Major of the Marine Corps will salute a Lieutenant because it's required and proper, but no Lieutenant would try to throw their weight around or get mouthy with the Sergeant Major of the Marine Corps, nor should they.
14 to 16 years. It depends on the MOS (Military Occupation Specialty) and those who are retiring. When someone retires in a MOS it creates a vacancy and openings for promotion. In some MOS's it can be fast and others very long. When a opening takes place (someone retires) then the Marine Corps promotion board looks at the available candidates and their fitness report scores to fill the vacancy. So make sure you have excellent scores and reports. I picked up SSgt (E6) in 10 years. Gunnery Sergeant (E7) may take up to 14 to 16 years.
Yes, it is possible to store unlimited amount of photos to a USB flash drive until the data storage limit is reached.
Most commonly by ship, although a very long overland journey was possible, once the mainland of Europe had been reached, by ship..
Two entirely different things. The rear detachment First Sergeant, is someone is assigned in such a role, is the senior noncommissioned officer of that detachment, whereas the commander is the one actually in charge - typically, this will be a commissioned officer, although it is possible that an NCO could be tasked to fulfill the role.
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"Centenarian" refers to someone who has reached the age of 100.
When you are addressing a male who has not yet reached the age of majority. When you are addressing an instructor in some of the marshal arts disciplines. When you are addressing someone who's title includes the word, for example Master Sergeant Smith. And in those rare occasions when you are part of an extra-curricular activity where Master is an excepted honorific.
Someone can. it is possible.
It means you really reached where you wanted in life.