There are many different sides of war, however, I will try to keep this as simple as possible. For the purpose of this post, there will only be two sides on this war: side A and side B. Side A will represent the winner. Side B will represent the loser. The loser will be defined as whichever side was either obliterated, or beaten so badly they were forced to sign an unappealing treaty. This is not an exhaustive list of considerations; in fact, it is very condensed, and should only be used for wars that happened in the past, as it will not be terribly useful for wars that are still going on in your setting.
Perception of the war changes often, especially as one side gets ahead of the other in a way that likely end the war favorably for them. Propaganda and the winner’s need to make the effort seem justified on their part can and will greatly skew events in their favor. This may be done so effectively that the truth never comes out, or that it takes hundreds of years to come out. Side A may publicly admit specific facts were falsified, only to have them still be considered fact by media and public opinion.
For each of these, you should answer three times: once for side A at the time of the event in question, once for side B at the time of the event in question, and once for what side A decided to claim was truth after the fact.
>What event started the war? Generally, people are not keen on declaring war; most would rather have a couple skirmishes or negotiations rather than all-out warfare. What happened that made the leaders decide that this was the best course of action at the time? Remember that one side could start a war based on something that happened hundreds or thousand of years ago, while the other might decide they were officially at war last Thursday, because that one guy spilling coffee on their boss was the first and last straw.
>What were other motivations for war?
>Who declared war first?
>What did they stand to gain?
>What did they stand to lose?
>Who was on each side?
>Which side was the aggressor (which side entered the other’s borders first)?
>When did the outcome become obvious? (Was it obvious from the start? Was there a defined turning-of-the-tides? Was victory up for grabs until the final battle?)
>When did the war end? (Not when treaties were signed, but when it was decided that treaties would have to be signed.)