This flag is one for a Northern European state. It is a vertical tricolor. The green represents the beautiful forested land, which the nation is known for. The black waterdrop represents the nation's massive petroleum industry. The white represents the peace of the people, who are the center of the powerful nation and what it does. The purple represents the government, and its ability to do what the people want. The darker wartime flag is used to represent all of these things joining together for war, with the sword representing the strength of the people to move through wartimes.

I hope this explains everything, and that you enjoy the flag designs!