White blade in, red blade out; white blade in, red blade out; white blade in, red blade out; white blade in, red blade out; white blade in, red blade out; white blade in, red blade ....
And they say war isn't simple.
@GurryCurryBurry I think your missing a step, if it comes out red they need to wipe it off to stick a white blade in, otherwise they'd need hundreds of thousands of blades each.