What constitutes being "old school" in the military?

Mint Green Class A uniforms for females

Old school is

Driving a CUCV

Crew chief on a OH-58A or. a CH-47C

Had to Use Brasso on your Branch and US insignia.

Worked on M-60 gpmg or 8 inch howitzers.

Drove a Kaiser Deuce and a half.

Wore baggy pants that buttoned on the side and had huge pockets on the legs, ran UP tank hill, know what mogas is, and drove gamma goats

My uniform was OD,I did PT in combat boots and qualified with the M14 rifle,one of my PT events was the run dodge and fall, and the 72 horizontal ladder with rusty bars to boot.I wore a steel pot on field training exercises and the buddie pack.Back then it was chow in the mess hall.I think you got the idea about ole school now if not I can think of plenty more. Active duty (1966-1986) Viet Nam Vet.

Old school is wearing a white T-shirt green Camo pants and black leather boots while doing PT.

Old School..... before the M-16, we carried n qual’d with M-14’s, 45’s and carried a “John Wayne “ to get our food out of a little green can

Leather boots and starched sateen (non-camoflage) utilities.

I did my pt test in green fatigues and combat boots!

Old school if you were black boots. OD green fatigues and were a WAC!

I wore a "banana suit " for PT and drove a jeeps and gamma goats