Both Uses

militant
in
The Magic Mountain
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But there was no clarity, no order, not even of a dualistic and militant sort; for it was ail not only contradictory, but also topsy-turvy, and the disputants not only contradicted one another, but also themselves.†
Chpt 6.6 *

militant = using extreme or violent methods used to achieve a political goal; or someone who uses such methods
Herr Settembrini was afraid of the "absolute Spirit," wanted to restrict "spirit" to democratic progress, and nothing else—was horrified by militant Naphta's religious licentiousness, which made a jumble of God and the Devil, the holy and the criminal, genius and illness, which recognized no values, no judgments of reason, no will.†
Chpt 6.6

Definitions:

(1) (militant)
using extreme or violent methods to achieve a political goal; or someone who uses such methods
(2) (meaning too rare to warrant focus)