Here are some links of sites, which I use for information and recommend accordingly. The list will grow further. The order of listing is not a ranking of importance.
Security policy and information
www.augengeradeaus.net
www.strategie-technik.blogspot.com
www.advanced-fieldsports.de
www.waffenkultur.com
www.soldiersystems.net
www.forgottenweapons.com
Education
www.0-500.de
www.KL-strategic.com
www.combatshootingandtactics.com
www.thunderranchinc.com
www.tmacsinc.com
www.trisl-reloading.com
Equipment
www.recon-company.com
www.hqg.de
www.spezial-brandz.com
www.react-online.com
www.stetson-europe.com
www.classic-kontor.com