you have to get the red flag on level 3 and then you will a secret level and if you get the red flag on the sercret level ole you will have the cannon but it will not take to world 7 it will take you world 5 the way to get the real world 7 cannon is in wolrd 4
To go in to world 5 ina wrap cannon on wols 2 you must do 2 short cuts!
you have to finish the level
Hack the program
Out ofa cannon
you can unlock a level with a pipe and cannon around it (i got it on a red flag on world 2 number 4 ) and finish that on a cheat flag( the yellow pipe above the other 1). this will unlock the cannon.
Complete world 3 or 4 or get the world 2 cannon
the cannon in my pants
frontline cannon fodder
to mislead the enemy
You Have To Get Into A Golden Tube On World 2-A
There is no cannon on world 1
A Battery is a large concrete emplacement that houses a gun (Cannon)