What constitutes being "old school" in the military?

I remember reporting for pay. "Private Thomas reporting for pay!" And receiving about $220 after taxes. I also remember my Gun Chiefs having massive handle bar mustaches. Everyone got hot drunk in the field. And my unit used to ambush the other batteries and beat the hell out of each other about 3-4 times a year. I'd consider that pretty old school.

When I first joined the Marine Corps we wore red shorts and a yellow shirt for PT. And unfortunately I later join the Army National Guard and in 2011 before I retired I still was staying in World War II barracks.

When I was a cadet many years ago my first year we had M-1 which we had the opportunity to fire on the range at old Fort MacArthur in San Pedro, California. My second year we switched to M-14s. When I enlisted we had M-3 Grease Guns in the company (A/1/15 IN, Harvey Barracks, Germany) and at battalion we had one M-28 Davy Crocketst system. This was when we rode in M-151 Jeeps, ran PT in combat boots and wore starched green uniforms, and had payday inspections.

Before the pussification of the military...when smoking wasn't considered "hazing"...when you were allowed to conduct wall to wall counselings....that's old school :)

Old school is:
Using a P38 to open C-rations.
Writing and mailing letters from your duty station.
Filling out a form, writing a check or money order, and mailing it to AAFES to order an item.
In your living quarters you had a stereo with a phonograph and a duel cassette player.
Sometime during your military career you owned a briefcase and an OD map case.
You've typed on an IBM Selectric typewriter and have used whiteout and correction tape.
You've used a DA 2496 (Disposition Form).
You've used transparencies to give your briefing.
You know what a REMF is.
You've used the word beaucoup. (I spent beaucoup bucks at the bar last night.)
You've set the selector switch on your weapon to rock and roll.
Wearing jungle fatigues and/or jungle boots.
Driving a government jeep with a manual transmission.
Wearing German Army boots while stationed in Germany.

Did PT in boots during Basic Training our in my case - OSUT at Fort Benning - 1982

Eating C-rats, pup tents, Fatigues , white t-shirts, M-1 rifle, PT with boots, metal mess kits with metal canteen and cup. metal trays mess hall. 3/4 ton trucks, 2 1/2 ton automatic trucks, two story wood barracks, no A/C, gang latrines, urinal troughs.

How about driving a Jeep without a roll bar? ... or even with a roll bar!

Starched green cotton fatigues, khaki's as dress uniforms, steel pots, M151 Jeeps, deuce and a half, tail-gate jump deployment, spit-shined jump boots, and tan poplin Class A shirts under dress greens!

Every generation of service members will say they are old school.