when did macbeth give the order "to arms, to arms, and to the field" Act 5 scene 6

I think that might be in Act 5 sc 5. The messenger has just informed Macbeth that a gigantic army is coming for him. Macbeth then begins to babble and scream about going to war.

To arms, to arms! Ring the alarum-bell!—Blow, wind! Come, wrack!
At least we’ll die with harness on our back.