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- E-bookThe British ArmyCharles Heyman
- E-bookThe British ArmyCharles Heyman
- E-bookThe Armed Forces of the United Kingdom, 2014–2015Charles Heyman
- E-bookThe British Army GuideCharles Heyman
- E-bookThe Armed Forces of the European Union, 2012–2013Charles Heyman
- E-bookThe Armed Forces of the European Union, 2012–2013Charles Heyman
- E-bookThe Armed Forces of the United Kingdom, 2007–2008Charles Heyman
- E-bookThe British Army, 2008–2009Charles Heyman