Tanka verse is a form of Japanese poetry that has 5 lines. In the first and third line you have 5 syllables and in the 2nd, 4th and fifth you have 7 syllables.
I have written an example: (I have entitled it, "Battle Hymn")
the coast is not clear
but there is no time to stop
we've grown in number
but the war still carries on
many more miles to travel
Why don't you spend a little time and try leaving your tanka poem as a comment?!? Looking forward to some of your creativity!