[quote=@rezay]Yes, very important. I imagine a lot of it is self explanatory/ingrained into human nature, but some finer points will take some time to relearn. Interesting story potential. Logistics especially will be hard. 
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modern warfare is extremely complex. Command and control, logistics, military formations, etc, are all apart of conducting large-scale military operations. But at this stage, warfare is nothing more than raiding and extremely small skirmishes.