How do I invite a war battle with another guild?

!war invite, guildname, frag amount (frag amount is from 1 to 1000)

How do I accept a war battle?

!war accept, guildname

How do I decline a war battle?

!war reject, guildname

How do I cancel a war invite?

!war cancel, guildname

How do I end a war battle?

!war end, guildname