State of Economy: +4 (Flourishing), +3 (Good), +2 (Mild), +1 (Poor), 0 (Non-existent or collapsing). See- power categories page
Many or major defenses and fortified places: Defender + 10
Technology: 0-7; with 0 being medieval technology, 1 being Napoleonic technology, 2 being WW1 tech, 3 being WW2 technology, 4 being 1960's tech, 5 being 1980's tech, 6 being 2010 technology and 7 being latest cutting edge technology. See- power categories page
Knowledge of landscape: +15 for in one's homeland, + 10 for warring in an adjacent nation, -1 for low knowledge of an non-adjacent lands which are on you continent, -10 for no knowledge of a distant realm that is not even on your continent and in polar regions (unless the attacker is also polar to)-11.
Each nation fall into a military categories. It's +1 for each category. If you're a failed state or city state 0. If you're a super power +5. See- power categories page
Side with greater population: +3
Side with greater industry: +3
Urban warfare in big cities of over 5,000,000 people like London, Tokyo, New York, Shanghai, Bombay and Berlin, Attacker-2, Defender+2
War Weariness: If you have been fighting for more than 3 turns in a row -5 each turn due to battle fatigue until you make peace for at least 2 turns.
Morale: -10 In face of larger army, -20 for completely surrounded, +5 for in face of a smaller army, +10 for surrounding enemy. If defeated last turn, then the looser from that battle is -5 to his opponent in this battle
Storming on to a coastline from the sea or on to an island, o in to desert, high mountains, polar or jungle the, the attacker - 4 and defender + gains 5.
Regional tactical Advantage: +4 defender/-3 attacker (for example crossing the Kalahari desert)
Nuclear war gives the atomic user +10 and defender -10 for strategic class arms, or +5 and -5 for tactical class arms, or +2 and -2 for SDD/SDM sub-Hiroshima and 'suitcase' mini-bombs. Also add +1 to the attacker and -1 to the defender if the capital is hit. Also add +1 to the attacker and -1 to the defender x the number of nukes used in the attack as a grand total.
Chemical weapons give the attacker +2 and the defender -1.
Every nation militarily helping with their side= +2
Every nation offering supplies to their side= +1
Every vassal nation or guerrilla force in any way helping with their side= +1
Act of terrorism by a guerrilla force or terrorists= -1 to the victim and +1 to the attacker
Religious motives= +5 to the attacker and - 0.5 to the defender.
Ethnic and cultural war motives = + 4 to the attacker.
Moral motives (setting right a historic injustice)= + 3 to the attacker.
Political motives (anti-communism and alike)= + 2 to the attacker.
Economic war motives = + 1 to the attacker.
Armed expatiation in large extremism climates like Greenland, Niger, Nepal and Amazonia will also be very slow due to logistic and climate problems for any wood-be invader. In this case the defender gets an advantage of +5 and the attacker gets a disadvantage of -6
Victim nations' life or death = + 10 to the nation who is fearing being wiped from history, +5 if facing losing over 10% of it's territory.
Strength: 1 point for every 50,000 troops in the combatants total militery.
Add the totals up and find the biggest total. The biggest wins.