English to Portuguese Art/Literary Religion Apocalipse

É mencionado diversas vezes no texto:
From the mouth of a tank cannon comes fire and smoke, and John smells the burnt propellant. This is a portrait of American **armor** in action.

In both sets of descriptions, he commingles characteristics of discrete weapon systems, aircraft and **armor**, respectively.

Armadura, acho que não se encaixa. Poderia ser força de combate?