Somebody sent me this link from chabad.org and noted that the one thing missing was actually being part of the non spiritual army, and fight and protect. I couldn’t agree more. That being said, I’m in Chutz La’aretz and therefore hypocritical. I also imagine that link was directed to those in Chutz La’aretz.
At the end of the day, the Rambam which was quoted by the LR and which is often repeated, says that you GO OUT TO MILCHOMO even on matters of Straw and Produce. B’Pashtus, as is the Pashtus of the Rambam in Hilchos Melachim, is that this is physical war (albeit assisted by good deeds and mitzvos and tefillos)
Avraham didn’t fight those kings with Kaballa or Chassidus. He SMOTE them AL PI CHAREV.