What constitutes being "old school" in the military?

Was issued solid olive drap uniforms and khakis as the B class uniform.

was there for most of it some came after I was gone

If you ever had to look up a hill called, “Mt. Mother-F’er”

Cooking C-Rats using C4

Are you old school when you are The platoon leader and half your people are drafted and the other half are volunteers?

Pork patty dehydrated- Living in WW2 Temporary open Bay Barracks for two years. Wearing a yellow banana suit, at 0530 PT 7 mile Run. Yep- I am old school

Approach to solving simple problems.

In the Marines we refer toit as the"Old Corps." Or being Old Corps.

Good question, I joined the Army when it was called the "Modern Army", (1974).