Should a 2LT salute a 1LT?

Uh, yeah...I always did, obviously, trustmme, major big time, honest....

As a Navy Ensign, I saluted anything with gold braid. When I came before a LT (jg) there was no question in my mind, I OWED THAT OFFICER MY SALUTE. And I was proud to render him the best salute I could .I always looked upon the act of saluting anyone senior to me,or returning a salute from any enlisted man, as an honor. It was an honor to salute anyone, or to return a salute from any enlisted man or women.
I was proud of that single gold strip on my uniform sleeve, and you would have had to break my arm to prevent me from saluting anyone higher in rank than me, the lowly 0-1.

Salute and be saluted. Think about the word. We salute people who do exceptional things, we hold them in esteem. As an enlisted guy and SP working a busy gate i'd reckoned I deliver a couple of hundred thousand salutes and I didn't mind -- I was welcoming a comrade, a person worthy of respect and they did the same to me. When civilians would ask I'd always say "It's a military thing, you wouldn't understand."

Enjoy your life and the friendship of comrades.

If the officer is Jr he salutes PERIOD! If that doesn't happen then the Sr officer should put the Jr officer in check...if this is happening I submit this to you "2 things people do.. what they know and/or what you let them" so in some instances the Jr officer knows what to do they are just being allowed to do the wrong thing

Geez, maybe this is a generational thing? Yes, the two lieutenants should salute each other. It's the second lieutenant's obligation to initiate the salute to the higher-ranking officer. The end.

In the Air Force (1971-1975), there was more saluting happening at OTS than I ever saw anywhere else. As it was explained to us, almost a LT, that as 2nd LT, we were going to do as much saluting as a General - saluting nearly everyone who came along.
Saluting at OTS became so mechanical that we were instructed (told) to add a verbal greeting to the salute. So, when walking around the area in small groups, we would greet each other with "Verbal Greeting" and respond to the greeting with "Audible Reply"

Is a Colonel a Colonel? If a LT is a LT, then do away with the 1st and 2nd then. Until then, you salute a higher ranking officer.

Yes, lead by example. I respected my senior NCO's especially "Top" more than I did most officers. Officers seemed to want to put too much distance between themselves and the rest of us.

As an Air Force retired MSgt, saluting is a tradition that is honorable between the ranks. The erosion begins by fraternization...I did not hang out with those who had position over me, and was quick to correct subordinates if I heard them call an officer by first name! "As long as you are around me, an officer is called sir and you will salute them!" I earned the title given to me by my subordinates "PRIC" AND that simply meant Puerto Rican in charge! I did not invent the military but I swore to obey those appointed over me according to the oath that EVERYONE takes! Nobody in his right mind will disrespect any officer in front of me! Call me hardcore...I call it discipline. The military is not a social experiment...disciplined is its design!

This is a very interesting question, and I enjoyed reading the dozens and dozens of responses. In all my 28 years years in the service, I never really gave this a thought. I was enlisted and saluted ALL officers, and could care less what officers did to each other, that was THEIR business, except once in a while I did wonder if Generals really did salute each other. Back in my day, we were told we only had to salute Warrant Officer's once a day, no matter how many times you approached him....and a Warrant Officer was addressed as "Mister". One last thing, I read a reference to where a jr NCO would be at parade rest when first addressing a sr NCO....never heard this before, interesting.