Just started - Basic questions

[PvtBenjamin]

Advancements

Please explain the relationship between Year/Investment/Progress.

1) never mind

2) Many researches are grouped. Anti -air is under interceptors. Does that anti-air impact all ground units?

3) What if I change advancments mid stream. Say I have 1 chit on interceptors for 1/2 a year then take it off. Do I loose all research?

4) Is spying represented anywhere?

5) Other than capturing resources how do I increase Production/manpower & oil.

I went thru the tutorials but its very fast.

many thanks

[battlevonwar]

5. Strategic Resources I believe they're called net you 1% economy boost. Other than capturing resources I see no other way to boost yourself. Your War Economy does change with time...