Assorted Sizes War?

[Glocksman]

A song I was recently listening to used the phrase 'assorted sizes war' and I'm not sure what it means.

Part of me seems to think it refers to the US V Mexico war, but I'm not certain.
Googling the phrase turned out useless, so any help as to which war the phrase means would be appreicated.

[Akkleptos]

If you're referring to the tune by the Rainmakers, it doesn't likely refer to the Mexican-American war.

The people wanted power and reputation galore
So they became a bunch of bullies
In the Assorted Sizes War
And they sailed around the global block
Looking for some heads to knock
And most of them came home heroes
Heroes in a box

I take it to mean "War with the small and the big". Funny thing the wars with the "small" didn't go all that well, come to think of it ('Nam, anyone?)...

[Akkleptos]

Especially considering that the David against Golliath factor was inverted by the time of the US-Mexican war, the Mexican Empire being the (sleeping, Catholic, praying) giant.