1) SDI - SDI is essential!! And remember the enemy chooses the country with the LOWEST SDI as missile target and you don't want that this will be your country, do you??
2) SPY TECH - almost everyone neglects it. But 150% spies is awesome...it affects your SPAL!!! and thus also multiplies your spy-support form allies!!
3) CONDITIONING is a "must" for all bigger countries. You will have to attack people your size and bigger and you want to do more than 3 attacks a day!!
4) Don't do useless attacks. Visit the GT site and ask for targets. Nothing is more ridiculous than doing GS alone or ABing a country with no buildings left!
5) SPAL is extremly necessary in a war, but you don't need a 50:1 SPAL all the time. So try to have a high SPAL when war starts but you won't need it in the first 2 weeks
6) Try to get your income mainly from tech and not buildings. Buildings can be razed, but tech is hard to destroy!
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Good war strategies (for everybody):
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Tyrannies:
Tyrannies are killing machines. Don't underestimate the "1 turn attack",
you CAN'T do more attacks a day than a demo (due to readiness) but you
will have more than 30 turns left (compared to 3-4 for demos) for missiles,
spyops and rebuilding your county!!! Futhermore the 10% gains should are
nice.