Back in 2007 you could go to Burger King and get a Coke and fries HALO.
This was to market Halo 3, which was set to release later that year.
In this promotion they put Halo on Coca Cola and fries, featuring Master Chief and the release date of Halo 3.
Because of this, we have Coke and fries HALO.

A cool thing about Coke and fries HALO is the design. It looks like Halo.
This was to promote their upcoming game Halo 3.
To do this, they made Coke and fries HALO.
This is back in 2007 when people consumed a lot of Coke and fries and liked to play Halo.

So, they decided to combine them, giving us Coke and fries HALO.
They made this in 2007 by putting Master Chief and Halo related things on both the design for their Coca Cola cup and their fry container.
So you could go to Burger King and say "I would like a Coke and fries HALO."