Strachan 'contributed to the development' of The British Army Field Manual Volume 1 Part 10 Countering Insurgency which was published in October 2009.
He was also a member of a private seminar series which met between May 2006 and January 2008 and produced an article in the RUSI Journal called 'Risk, Threat and Security: The Case of the United Kingdom'. The article expressed concerns that the 'politicisation' of defence policy and a national 'lack of confidence' made the UK vulnerable to security threats. It suggested therefore the partial removal of defence policy from democratic control.
In assessing the supposed security threats to the UK, the article expressed a concern that the country was ‘soft’ and lacked a cohesive identity which made it vulnerable to enemies. It complained of a ‘lack of leadership from the majority which in misplaced deference to ‘multiculturalism’ [has] failed to lay down the line to immigrant communities’. 
- Ministry of Defence (2009) British Army Field Manual Volume 1 Part 10 Countering Insurgency, Army Code 71876 October 2009, Crown Copyright, noted on last page of the document
- Gwyn Prins & Robert Salisbury, 'Risk, Threat and Security: The Case of the United Kingdom (PDF)', RUSI Journal, Feb 2008, Vol. 153, No. 1
- Institute for Statecraft Governance. Accessed 26 December 2015.