Option to attack with only 1 or 2 dice

Concise description:
An option to use only 1 or 2 troops when attacking even if you can attack with 3 troops
this option does not include defense
Specifics/Details:
for example:
Attack _______ from _________ with __ troops
How this will benefit the site and/or other comments:
It may add a new layer of strategy to the game as well
as giving players more control over how they attack
I got this idea when i was playing risk the other day
An option to use only 1 or 2 troops when attacking even if you can attack with 3 troops
this option does not include defense
Specifics/Details:
for example:
Attack _______ from _________ with __ troops
How this will benefit the site and/or other comments:
It may add a new layer of strategy to the game as well
as giving players more control over how they attack
I got this idea when i was playing risk the other day