This descr_strat.txt-file, found inside of the extracted folder, should be placed inside of your data/world/maps/campaign/imperial_campaign-folder. It is an alternative option for those wanting no siege artillery in the campaign at all. All factions start with more infantry and cavalry troops instead at the start, like the old Westeros TW-mod- but of course all units are new! Factions like House Stannis and House Greyjoy are stronger at the start- as almost all their armour upgraded units were replaced by siege artillery in the released version. The campaign wouldn't start if adding more units than previously, so the choice was either replacing infantry/cavalry with siege artillery or having no artillery at all. As Stannis especially, but also the Greyjoys didn't start with large forces- they did get very few starting troops in the released version with artillery units inc. This file will change that- and their units are armour upgraded, at the same amount like everyone elses units.